02:51:213 (2) - You could change this circle to a 1/2 slider, having a short gap kind of breaks the flow in my opinion.
00:29:201 (1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4,5,6,7,1,2,3,4,5) - I think you should focus a bit more on vocals there. It is a slow part and vocals are a pretty important part of the song there. Your mapping is missing vocals at 00:30:443 - , 00:31:864 - , 00:33:284 - , 00:34:704 - and 00:37:544 - .
00:02:574 (1,1,1) - i don't know about this section, especially those two 00:02:840 (1) - 00:03:195 (1) - since they're both reverse 1/4, but the second one goes for longer, I think it could be confusing. Here's an idea, so that every drum gets mapped, while every clickable object is on a white tick: https://i.imgur.com/jcztU4u.png
03:34:526 (3,4,5,6,7,8) - 02:30:621 (3,4,5,6) - These sections just feel out of place, in my opinion.
03:34:526 (3,4,5,6,7,8) - the doubles feel out place compared to the rest of the map, you could just go for something simple like https://i.imgur.com/RtIwdQL.png or even just 1/4 sliders like this https://i.imgur.com/TC2pGLS.png
02:30:621 (3,4,5,6) - same thing over here. Also the fact that 02:30:710 (4) - and 02:30:887 (5) - both land on a blue tick doesn't help with making the rhythm comfortable either.
03:06:834 (1,2,1,2,3) - i think you should keep following a bit of the instrumental there, I know you're trying to follow the vocals there, but the mapping feels too slow there, for what the music plays.
01:13:225 - 02:21:390 - 03:25:296 - 03:48:017 - I don't think all these abrupt changes of slider velocity follow the intensity of the song, also it kind of ruins the flow since you don't except this change of speed.
For 01:13:225 - and 02:21:390 - , you could go for this kind of rhythm: https://i.imgur.com/F36wFzZ.png just like you did at
03:25:296 - and 03:48:017 - on the Insane diff'.
00:17:652 (1,2,3,4,5) - this part of the music is pretty much the same as this one 00:11:121 (1,2,3) - , so you should try and make those two parts the same pattern for the sake of consistency.
Changed my mind actually, 00:16:770 (1,2) - and 00:20:837 (1,2) - are now clickable objects, feels better like this.
Alright, got rid of the unnecessary filler at 00:21:219 - (and the one at 00:17:151 - as well). I'm keeping this 00:16:770 (1) - and this 00:20:837 (1) - as 1/1 sliders for now.
I still changed this entire section 00:24:905 (1,2,3,4,5,1,2,3,4,5) - since as you said, they are overmaps, and also to make it more consistent with what rhythm i followed for the advanced diff'.
I'm keeping 00:00:499 (1) - this and 00:16:770 (1) - this as they are.
Because of that, the Hard diff' rhythm was changed to fit with the Hyper diff's one.
Alright, I tested the reverse slider idea like in the normal diff, I don't really like it, it feels out of place to me, not gonna lie. But you're right, the 1/2 starting on a red tick doesn't feel right either. I'll fix it with the most simple solution, two 1/1 sliders and a circle on the last vocal, basically ignoring the vocal on 00:30:753 - altogether.