i suggest 00:12:114 (12114|3) - 00:18:004 (18004|3) - remove every double that attached to 1/6 stream like this, single 1/6 stream should be enough, its a bit too dense and cause a large gap between normal and hard
00:26:484 (26484|2) - I think better move to column 4 for comfortablity, because i felt 00:26:484 (26484|2,26668|2) - is not comfortable.
00:29:797 (29797|2,29889|1,29981|2,30165|1) - Ctrl+H here can help balance the anchor on column 3.
00:32:190 (32190|2,32558|1) - Move to column 2 and column 3 to avoid jack at 00:32:006 (32006|2,32190|2) - , because i think there is no reason to jack those.
00:55:196 - 00:55:564 - These double notes are note very consistent with before since you haven't been using doubles for piano sounds only. I understand you wanna make these sounds stand out, but I believe you can just use singles and some special patterns to represent them, like using trill: https://osu.ppy.sh/ss/17715534/e55a
01:02:926 (62926|0,63110|1,63294|0,63478|1,63662|0,63846|1) - I think you can avoid this long trill, how about do https://osu.ppy.sh/ss/17743680/dd67 ?
01:12:865 (72865|2,72926|1,72987|2,73049|1) - Uhhh not sure if this is for Hard, so I'd really suggest rearranging them like 01:12:129 - this one.
01:21:515 - to 01:22:251 - Some rearrangements you can use to balance the patterns a bit more and differentiate the drums with pianos: https://osu.ppy.sh/ss/17715547/8b8e
01:22:251 - I think the pattern doesn't flow, you can probably do https://osu.ppy.sh/ss/17743684/7b26 instead to be more flow.
01:28:325 (88325|2,88509|2,88693|2,88877|2) - Could rearrange to avoid this anchor like this: https://osu.ppy.sh/ss/17715554/80ac