[General]
There doesn't really seem to be reason for you to skip the intro on your lower difficulties aside from "I didn't feel like mapping this". This takes away from the overall quality of your set since you're not mapping the same things in all of your difficulties, especially when it is feasible to do so. I understand you have variable timing, but you can adjust the SVs to normalize the SV in the intro section.
[Insane]
Your NC system could use some work in providing proper emphasis, since they're used to seperate musical groupings. 00:18:183 (1,2,3) - Stuff like this doesn't work too well for example due to having the start of the new musical phrase landing on 3. In cases like this, you're better off NCing 3 and un-NCing 1, or you could keep 1 NC'd to indicate that they're pick up notes for the next beat. The same logic also applies to most of your triples throughout the map and to stuff like 00:28:492 (6) - .
00:03:004 (2,1) - I recommend using a harsher placement here, since for a transition between a vocal only part to a part with instrumental backing, this is a really weak transition. Something you could do is change the orientation of your pattern to something like this which would give more emphasis to the next note.
00:16:323 (6,7) - I recommend changing 6 into a 1/2 slider and adding a circle in the middle of this to emphasize the change vocal intensity here.
00:23:029 (1) - Using a larger spacing to this would put more focus on the slow SV of these vocals, so I'd recommend doing that even if you shortened 00:21:948 (1) - to end on the blue tick to do so.
00:27:773 (4) - I recommend changing this into a 1/2 slider + circle to make 00:28:492 (6) - stand out more and follow the piano a bit better.
00:29:569 (1,2) - Not sure if I'd agree that the spacing here fits due to how weak 2 is, though the spacing definitely fits for 00:29:749 (2,3) - very well. I recommend doing something like this to fit the intensity better.
00:33:880 (3,1,2,3) - The entry angle into this triple ends up putting more emphasis on the red tick than the white tick here due to 1 being the point of the direction change, and since the player has to stop on that note they don't have any momentum going into 3. Since the red tick isn't really strong here. I recommend reorienting your triple to have a more comfortable entry angle and proper emphasis on the white tick like this. You'll likely have to change some things around to accommodate this.
00:55:797 (1,2) - I think since you're building up to transitioning to 00:58:671 (1,2,3) - that changing 1 into a 1/2 slider + circle is more appropriate due to how strong the doubles are here.
01:03:701 (1,2) - Having these in a pattern with 01:02:983 (1,2,3) - is hurting your overall emphasis of the vocals, especially since there isn't a large SV decrease. I recommend spacing these away from the previous pattern and incorporating an SV decrease to focus the vocals more and fit the lack of instruments here. Something like this can work.
01:05:138 (4,5) - I've mentioned it enough by this point I think your rhythm from 01:04:420 (1,2,3) - is more appropriate here. This variation is very different in terms of intensity and having the 3/4 as a slider tail detracts from the sounds that this song is based on. If you need a variation here, I would recommend a rhythm like this instead, since although it is more awkward to play it captures what the song is build around better than only having your clicks on the metronome.
01:08:731 (1,2) - Having all circles for this rhythm like this would make for a better lead in to the stream you have after this.
01:17:354 (1,2) - Due to the lack of instruments playing here, I recommend using a 2/1 reverse here for a sharp contrast with the previous intensity. Though, if you did this you'd have to adjust your rhythms afterwards.
[Hard]
Similar to the Insane, you're overrelying on 00:58:671 (1,2) - when it really doesn't fit the drum line this song is based around due to not having the blue tick clickable. Due to the angles you're using and this difficulty level though, its more acceptable for this to be more common, but that doesn't mean you cannot use other rhythms like what you do at 00:27:055 (1,2,3) - more often.
01:15:917 (1,2,3,4,5,6,7,8,1,2) - For this BPM, 9 consecutive clickable objects with 1/4 gaps is unacceptable, especially with this kind of spacing. I recommend changing 01:16:276 (5,6,7,8) - into a 1/4 repeat and then this will work great as an end-of-kiai stream for this difficulty.
Nothing much to say here aside from that.
[Advanced]
This difficulty is too hard to be considered a proper advanced difficulty for this spread. You introduce 1/4 in the hard difficulty above this, and the difficulty below this barely has any 1/2, so this difficulty would need to fill the role of adjusting the players to playing 1/2. This means that for this BPM, you should try to keep the maximum amount of objects with 1/2 gaps between them to about 6. Additionally, you shouldn't be introducing 1/4 repeats since in the context of the spread, they are too fast for players to interpret properly.
00:27:055 (1,2) - Slider tail stacking is heavily discouraged in normal difficulties due to the additional reading difficulty they add (I bring this up due to advanced difficulties needing to follow normal and hard guidelines).
00:28:312 (4) - 00:31:186 (5) - Removing notes like this will allow you to introduce more 1/1 gaps as breaks
00:32:803 - Sliders at this difficulty end up being more difficult to keep up with than circles due to newer players still trying to learn how slider mechanics work, so introducing either 1/1 gaps or more circles in this chain will help the player adjust to them more easily.
[Normal]
00:44:300 (1,2) - Avoid blanketting the following note in the lower difficulty. Players at this difficulty will likely see 2 and let go of the slider early to hit it due to the blanket. Something like this can work out better since the next note is more in the direction of the slider end than it would be if it was blanketed.
00:55:797 (1,2,3) - Avoid even distance between objects in the lowest difficulty, since the player can easily hit 3 instead of 2 since they are visually the same distance apart. Something like this can work, though it's not as pretty.
01:01:546 (1) - Awesome.
01:21:665 (1,2,3,4) - Cool, but you're better off using circles, since this is a difficulty spike for players at this level due to the large amount of consecutive 1/2 gaps that were not present prior to this.
Good luck!
There doesn't really seem to be reason for you to skip the intro on your lower difficulties aside from "I didn't feel like mapping this". This takes away from the overall quality of your set since you're not mapping the same things in all of your difficulties, especially when it is feasible to do so. I understand you have variable timing, but you can adjust the SVs to normalize the SV in the intro section.
[Insane]
Your NC system could use some work in providing proper emphasis, since they're used to seperate musical groupings. 00:18:183 (1,2,3) - Stuff like this doesn't work too well for example due to having the start of the new musical phrase landing on 3. In cases like this, you're better off NCing 3 and un-NCing 1, or you could keep 1 NC'd to indicate that they're pick up notes for the next beat. The same logic also applies to most of your triples throughout the map and to stuff like 00:28:492 (6) - .
00:03:004 (2,1) - I recommend using a harsher placement here, since for a transition between a vocal only part to a part with instrumental backing, this is a really weak transition. Something you could do is change the orientation of your pattern to something like this which would give more emphasis to the next note.
00:16:323 (6,7) - I recommend changing 6 into a 1/2 slider and adding a circle in the middle of this to emphasize the change vocal intensity here.
00:23:029 (1) - Using a larger spacing to this would put more focus on the slow SV of these vocals, so I'd recommend doing that even if you shortened 00:21:948 (1) - to end on the blue tick to do so.
00:27:773 (4) - I recommend changing this into a 1/2 slider + circle to make 00:28:492 (6) - stand out more and follow the piano a bit better.
00:29:569 (1,2) - Not sure if I'd agree that the spacing here fits due to how weak 2 is, though the spacing definitely fits for 00:29:749 (2,3) - very well. I recommend doing something like this to fit the intensity better.
00:33:880 (3,1,2,3) - The entry angle into this triple ends up putting more emphasis on the red tick than the white tick here due to 1 being the point of the direction change, and since the player has to stop on that note they don't have any momentum going into 3. Since the red tick isn't really strong here. I recommend reorienting your triple to have a more comfortable entry angle and proper emphasis on the white tick like this. You'll likely have to change some things around to accommodate this.
00:55:797 (1,2) - I think since you're building up to transitioning to 00:58:671 (1,2,3) - that changing 1 into a 1/2 slider + circle is more appropriate due to how strong the doubles are here.
01:03:701 (1,2) - Having these in a pattern with 01:02:983 (1,2,3) - is hurting your overall emphasis of the vocals, especially since there isn't a large SV decrease. I recommend spacing these away from the previous pattern and incorporating an SV decrease to focus the vocals more and fit the lack of instruments here. Something like this can work.
01:05:138 (4,5) - I've mentioned it enough by this point I think your rhythm from 01:04:420 (1,2,3) - is more appropriate here. This variation is very different in terms of intensity and having the 3/4 as a slider tail detracts from the sounds that this song is based on. If you need a variation here, I would recommend a rhythm like this instead, since although it is more awkward to play it captures what the song is build around better than only having your clicks on the metronome.
01:08:731 (1,2) - Having all circles for this rhythm like this would make for a better lead in to the stream you have after this.
01:17:354 (1,2) - Due to the lack of instruments playing here, I recommend using a 2/1 reverse here for a sharp contrast with the previous intensity. Though, if you did this you'd have to adjust your rhythms afterwards.
[Hard]
Similar to the Insane, you're overrelying on 00:58:671 (1,2) - when it really doesn't fit the drum line this song is based around due to not having the blue tick clickable. Due to the angles you're using and this difficulty level though, its more acceptable for this to be more common, but that doesn't mean you cannot use other rhythms like what you do at 00:27:055 (1,2,3) - more often.
01:15:917 (1,2,3,4,5,6,7,8,1,2) - For this BPM, 9 consecutive clickable objects with 1/4 gaps is unacceptable, especially with this kind of spacing. I recommend changing 01:16:276 (5,6,7,8) - into a 1/4 repeat and then this will work great as an end-of-kiai stream for this difficulty.
Nothing much to say here aside from that.
[Advanced]
This difficulty is too hard to be considered a proper advanced difficulty for this spread. You introduce 1/4 in the hard difficulty above this, and the difficulty below this barely has any 1/2, so this difficulty would need to fill the role of adjusting the players to playing 1/2. This means that for this BPM, you should try to keep the maximum amount of objects with 1/2 gaps between them to about 6. Additionally, you shouldn't be introducing 1/4 repeats since in the context of the spread, they are too fast for players to interpret properly.
00:27:055 (1,2) - Slider tail stacking is heavily discouraged in normal difficulties due to the additional reading difficulty they add (I bring this up due to advanced difficulties needing to follow normal and hard guidelines).
00:28:312 (4) - 00:31:186 (5) - Removing notes like this will allow you to introduce more 1/1 gaps as breaks
00:32:803 - Sliders at this difficulty end up being more difficult to keep up with than circles due to newer players still trying to learn how slider mechanics work, so introducing either 1/1 gaps or more circles in this chain will help the player adjust to them more easily.
[Normal]
00:44:300 (1,2) - Avoid blanketting the following note in the lower difficulty. Players at this difficulty will likely see 2 and let go of the slider early to hit it due to the blanket. Something like this can work out better since the next note is more in the direction of the slider end than it would be if it was blanketed.
00:55:797 (1,2,3) - Avoid even distance between objects in the lowest difficulty, since the player can easily hit 3 instead of 2 since they are visually the same distance apart. Something like this can work, though it's not as pretty.
01:01:546 (1) - Awesome.
01:21:665 (1,2,3,4) - Cool, but you're better off using circles, since this is a difficulty spike for players at this level due to the large amount of consecutive 1/2 gaps that were not present prior to this.
Good luck!
