For all maps, make the hitsounds audible when the note is clicked. Doesn't need to be too loud but it provides helpful feedback to the players and its rather disorienting without them.
Also 00:06:884 - kiai?
[Easy]
Map is very correct and vaguely interesting, some hitsounds would be nice to make it more interesting
[Normal]
*-* boooooooobs
[Hard]
00:47:926 (2) - reverse selection
01:16:259 (3,4) - doesn't feel like it follows the music
[Taiko Oni]
First time modding a taiko map, so bear with me
00:00:218 (1,2) - too early in the mp3, the players have no context to hit these
00:14:488 (4) - clap feels awkward here, maybe put it on 3 instead
00:21:988 (29) - this seems like a weird place for a clap
00:29:176 (32,33) - maybe repeat this pair of claps on 00:29:593 (36,37)?
00:55:634 (42) - clap feels out of place
01:07:822 (25) - ^, maybe put claps on 24 and 26 instead?
01:09:488 (35) - ^
[D.N.Angel]
00:01:051 (6) - not so soon on the jumps please, build up expectations for them first
00:47:926 (3) - the placement of this bothers me and I can't figure out why
00:50:842 (2) - why not just move 2 farther away from 1 to make the next spacing more obvious?
01:21:259 (5) - you are EVIL. EVIL i say.
[Saten]
First of if you are trying to reference Satan the enemy of God and all that, you spelled it wrong
00:05:218 (1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8) - if you could use inheriting timing sections to make the notes gradually louder on this stream that would be EPIC
00:16:676 (1,2,3,4,1) - not entirely sure the purpose of this deathstream
00:33:551 (1) - try a finish instead of a whistle on the start
01:26:468 (5) - partially hidden by combobursts. Why not just continue the curvy pattern you had going? It was pretty :<
Overall, as I said, the higher difficulties are well-done but the lower ones tend to feel uninteresting despite their cleanliness and coherence.