00:20:691 (1,2,3,4) - ik this might be intentional but could you do something to represent that 00:21:191 (3,4) - is 1/1 gap, since right now the spacing is same as 00:21:025 (2,3) - which is kinda confusing
00:21:993 (1,2) - 00:22:659 (3,1) - not sure what to think about these spacing u might wanna reduce them
00:31:358 (1,2) - 01:51:358 (1,2) - seems more intuitive to swap nc here, and 03:32:858 (3) - nc, 03:32:358 (1) - 03:32:858 (3) - unnc
01:14:326 (7) - could move this up on the playfield since its a 1/1 gap + provides better emphasis
i personally wouldve made 01:43:993 (3,4,1) - like this https://imgur.com/a/LCtJ1zm i htink the current pathing is really awkward
01:51:993 (5,6,7,8) - could do something similar to what you did like 00:31:993 (5,6,7,8) - since it currently feels weak
02:01:993 (1) - this additive rhythm doesn't really makes sense to me since the snare are in 1/2 and is very noticeable
02:04:159 (2,3,4) - your spacing on this is very big compare to the top diff, could reduce the spacing to be somewhat similar to the top diff.
02:28:326 (3,1) - this shouldn't be overlapped since its inconsistent with 02:25:659 (3,1) -
02:54:826 (4) - suggest stacking this with 02:54:659 (3) - instead to give more emphasis on 02:54:993 (5) - cause of the snare.
03:12:659 (1,2,3,1,2,3,4) - add hitwhistles?
03:17:993 (1,2,3,1,2,3,4) - this too
this applies to the top diff too.
also this pattern is lot more active compare to the top diff. could swap the pattern around.
03:54:358 (1,2,3) - would nerf the entire pattern as even considering this is for a buildup and the movement is kinda smooth, the spacing of 03:55:025 (3,1) - is still too large for an insane
04:20:691 (1) - just introducing a reverse slider here when 00:31:358 (1) - 01:51:358 (1) - introduce active rhythms feels a bit underwhelming especially since this should be a notable element of the music, could do the same thing for the last part