Fantastic maps, nothing much to suggest so I can only give some opinions:
Easy: Fine.
Normal: Fine. Though try it with the difficulty up one tick, I think it plays better.
yeahyeahyeahhh’s Heavy: - All fine, though I tweaked with the spacing a little and thought it worked well:
00:08:47 (3,4) – I think this looks and plays better if you use x0.7 spacing between 3 and 4.
00:11:51 (3,4,5,6,7) – Same but space 3 and 4, and 6 and 7.
00:14:55 (3,4,5,6) – ^ 3 and 4.
00:17:58 (2,3,4,5,6) - ^ 4 and 5, 5 and 6.
00:20:62 (1,2,3,4) - ^ 1 and 2
00:54:61 (11,1) - ^ 11 and 1.
01:00:49 (4,1) - ^
01:16:82 (1) – This slider is an odd shape it’s hard to follow, but otherwise its ok.
Kirby’s Challenge: Fine, and extremely challenging.
All great, I'll add my star then.