Since arken is slacking off~
(this is totally going to bleed into my own style when I map my own Easy/Normal/Hard, you just watch)
[Easy]
This should be on slider tick rate 2, since some of your sliders land on places that sound awkward with slider tick rate 1, such as 00:03:958 (2). (it also looks nicer in terms of symmetry)
00:42:208 (3) - How about replacing this with a 1-repeat 1/1 slider, like you had earlier?
00:43:408 (1) - Really cool effect.
00:50:608 (1,2) - Whether you use tick rate 1 or 2, this part still sounds awkward...
[Normal]
00:03:058 (1,2) - I felt that these landed in weird places.
00:09:508 - Adding a note here sounds better, though I agree it might be a bit hard for Normal. Your call.
00:09:808 (1) - End this 1/2 earlier?
00:27:658 (1) - I'd recommend not stacking this, since having it spaced gives more cues for how soon the next slider will come.
00:38:608 (1,2,3) - 2 and 3 should be switched, to form slider-note-slider instead of slider-slider-note, follows the music better, imo.
00:41:008 (2,3,4) - Same for 3 and 4 here.
00:52:408 (2) - I recommend changing all the sliders to the 1-repeat variety, just because of how awkward that tick placement is.
00:56:608 (1) - Starting here, I lose track of your combo scheme; please explain it to me because I'm dumb~
00:58:408 (5,6) - Doesn't follow the music that well.
01:05:158 (1) - Add a note on the major white tick before this? Starting a pattern 1/2 after a major white tick is a bit rough on Normal.
01:14:308 (4) - Here's something you could do here; use a custom section where the slider whistle sound is silenced. Start the section right on the 4, but end it and go back to normal at the repeat. Then if you add a whistle to this slider body, it'll become audible after the repeat, and sound cool along with the slider whistles that are after this.
01:21:808 (1,2,3) - I recommend swapping 2 and 3 again. This just puts the slider head on the major white tick, which is musically better.
[Hard]
00:03:958 - This space is a bit awkward.
00:05:308 - Add a note here? This gap is hard to read since it's stacked.
00:27:358 (2) - Lands in a weird place, the lyric doesn't start until 1/2 after.
00:38:308 (1) - Add a note where this is, start it 1/1 later, so that it lands on the big white tick. Plays better.
00:40:708 (1) - Weird place for a slider end and a gap; I'd put notes on the two white ticks after this too; it's a Hard anyways, sounds much better.
00:43:408 (2) - Slider ends in a weird place. Ironically it's a big white tick, but nothing happens on this big white tick.
00:45:808 - Something does happen on this one though, which is missed...
00:46:408 (4) - Nothing happens on this white tick.
00:48:508 (7) - This is good.

No problems with this slider here.
00:55:408 (1) - Don't understand this kiai combo scheme either. The note placement is fine though.
01:24:208 (1) - Really hard to predict when this one ends, so 2 is a frequent miss.
[Insane]
Some parts of this are hard to read with the video.
00:03:958 (1,2,3,4,5,6,7) - Concerned about how messy this combo is; it's quite cluttered together. I could read it on my first try, but it didn't look very good.
00:38:608 (2) - These claps are a bit weird.
00:43:408 (1) - Doesn't follow the music, and that one 1/2 triplet is hard to read. Why is this all 1/1s?
00:50:608 (1) - Using the slider to introduce the 3/4 section is definitely good. -thumbs up-
00:57:808 - The lack of a note on this major white tick is very hard to expect since the notes occur in separate places, so it could be easily mistaken as a jump.
01:02:608 (6) - I don't recommend having these even-number repeat sliders with a note after, which you have a lot of, because it would make just as much sense to have an extra repeat on the slider, so it's hard to predict the note.
01:14:608 (1) - Too pointy, make them a bit rounder?
01:25:558 (1,2,3,4,5,6,7) - Same as before about this pattern.
[Extra]
00:09:808 (1) - Could look better, probably.
00:12:508 (1) - Manually change this combo to a different colour please.
http://puu.sh/4Dp600:27:658 (6) - Could be made perfectly symmetrical by pushing the top point up a bit and then moving the center point right until one more grid would cause the slider to shorten.
http://puu.sh/4Dpj00:29:008 (9) - Misses the last "raaahh" but that's okay.
00:32:758 (1) - I would've started this stream on the big white tick; a bit more intuitive to play and the music starts on the blue tick in between anyways.
00:38:608 (1) - I don't think this was a good place to double the number of claps.
00:50:608 (1) - How about combos of 6 instead of 3 here? With your AR, the jumps should be obvious enough, and it would make your combos symmetric and consistent with the ending 7-note combo.
01:00:208 (1) - It seems like you put a new combo with every second stanza (whenever the girl comes in), so a new combo isn't necessary here.
01:08:008 (1) - ^
01:09:808 (1) - ^ (do you change to having a new combo on the guy's lines too here? It might be better to make them consistent. Look over the kiai section's combos please)
01:14:608 (1) - A bit of a weird place to put a stream; I personally have an anti-stream here (jumpy long sliders). XD Your style though.
01:19:408 (1) - Completely random and unpredictable speed up, and looks like you designed it purposefully so that you can't hold your mouse in the middle. While I'm okay with the stream, I'm not okay with this.
Okay, to be honest, I think this needs more modding, so I'm removing the popped bubble icon.