00:20:539 (20539|1,20634|2,20729|3,20824|0,20919|1) - You've described all the drum-roll here as a single.
Of course, 00:20:729 (20729|3) - I understand that it is because of this expression, but 00:20:539 (20539|1,20634|2,20729|3,20824|0,20919|1) - in one direction. I don't think it needs to be used.
So 00:20:824 (20824|0,20919|1) - if you Ctrl+G here, 00:21:108 (21108|0) - not only will this place be highlighted, but you won't feel anything strange when playing.
00:20:349 - changed
01:44:368 (104368|0,104463|1) - but ill keep this pattern。 becuz it isnt same with 00:20:349 - . rather, it corresponds to 00:23:767.
00:24:051 (24051|2) - Is there a reason you chose this place?
Personally, I can't hear any sound, 00:23:197 (23197|3,23292|2,23387|1,23482|0,23577|3,23577|2,23767|0,23862|1,23957|3,24051|2,24146|3,24146|1,24146|0) - Although it has a similar structure, the flow of the music you hear is different, so it feels strange when playing.
Rather 00:23:957 (23957|3) - this Tom sounds more fluent, and instead of 00:24:051 (24051|2) - this expression 00:23:957 (23957|3) - double here: I think it's good to emphasize this.
01:04:969 (64969|1,65064|2,65159|1) - vs 01:05:349 (65349|2,65444|1,65539|2) -
I think you used too much trill. Personally, since the atmosphere and flow are different, using similar patterns lacks impact.
Therefore, it would be a good idea to take advantage of the empty column 1 and move this snare to column 1 : 01:05:444 (65444|1)
01:08:387 (68387|2,68387|3,68577|0,68577|1,68767|3,68957|0,68957|1,69146|2,69146|3,69336|0,69336|1,69526|3,69526|2) - It's a very simple jump format, and the layout doesn't seem to be suitable for the hard difficulty level.
Even when compared to Insane, it is too easy to be considered a lower difficulty level compared to LN Jack. And since it is the part right before the chorus, it needs to be strong. Choruses are really essential for build-up as they usually have the same density.
01:29:083 (89083|1,89178|3,89273|2) - vs 01:30:602 (90602|2,90697|1,90792|3,90887|2) - The flow of the two drum expressions is too much similar, so it feels very strange when playing
Patterns in the same direction destroy the diversity of the flow, and to me it looks like the pattern was not taken into consideration.
Therefore, as it is a drum with different intentions, we want to use a variety of flows.
01:34:589 (94589|2,94684|1,94779|3,94779|0,94969|2,95064|1,95159|2) - vs 01:36:108 (96108|2,96203|1,96298|3,96298|0,96488|2,96583|1,96678|2) - It is best to refrain from using identical, unrelated patterns.
This intention sounds like “roughly work” to me.