Below are just suggestions, feel free to ignore if you don't agree with me.
[General]
The upper part of ntr46cel.jpg should be cleared and set white?
Timing is quite off during the last few seconds (the "hey hey hey" part)

[quo's normal]
Difficulty name should be [quo's Normal], I guess
00:26:384 (3) - maybe remove the last repeat, and add two circles at 00:27:449 and 00:27:662, a slider from 00:28:088 to 00:28:407
00:31:921 - add circle here?
00:40:013 (3) - remove the last repeat, and add circles at 00:41:078, 00:41:291 and 00:41:717 ?
00:48:957 (1) - remove the finish sound at 00:49:170 (the first repeat)
01:03:011 (timing) - lower the volume a bit... it's too loud
01:04:715 (3) - start at 01:04:502
01:14:085 (3,4) - replace with a slider from 01:14:085 to 01:14:297 ?
01:14:936 (5) - replace with a slide from 01:14:723 to 01:15:362 ?
01:16:640 (3) - new combo as before
01:18:343 (5) - start at 01:18:131
01:30:269 (1) - end at 01:33:676
* Many parts after have problems identical or similar to the ones listed before, so I'm not listing all of them
02:06:470 (5) - remove the finish sound at 02:06:683 (the first repeat), well the same as before...
02:12:219 (4) - remove the finish sound on the slider end 02:12:645
02:12:858 (5) - shorten the slider path, so that the first repeat lie here -> 02:13:177 and not 02:13:284, And remove the finish sound on the first repeat
02:16:265 (5) - shorten the slider path, so that the first repeat lie here -> 02:16:585 and not 02:16:691, And remove the finish sound on the first repeat
02:33:727 (7) - remove the last repeat and remove that normal-whistle sound. seriously that sounds bad.
02:47:355 (7) - ^
02:52:892 (1) - end at 02:55:022. also move the next timing section there. kiai should end with the spinner imo
03:41:444 (2) - remove the normal-whistle...
03:49:110 (3) - ^
03:52:091 (7) - ^
04:08:275 (3) - make symmetry with 04:06:998 (1), or you might want to arrange 04:06:998 (1,2,3) in an equilateral triangular fashion

[AHard]
* (If we take "A" as a prefix, "AHard" means "not hard" =w= well just joking
00:55:132 (2,3) - move up a bit?
01:04:502 (3,4) - maybe remove 3 and make 4 start at 01:04:502 ? (keep the end at 01:05:141)
03:05:669 (1,2) - use 0.5x or 0.75x inherited section here? now the sliders are a bit long and doesn't look that good
03:09:502 (2,3,4) - spacing is not even
03:11:205 (7,8,9) - ^

[Frantic]
* Many sliders are imperfect, like 00:23:616 (1) 00:25:533 (1) 00:30:430 (1,3) etc. it doesn't matter much though but if you fixed them the patterns would certainly look better =w=
00:35:754 (1) - imperfect overlap (slider end and 00:34:902 (3))
00:53:216 (1,2,3,4,5,6,1,2,3,4,5,1,2,3,4,5) - move right 1 grid ? (well I know nazi is bad
01:16:640 (2) - you should adjust the red anchor so that the slider turns exactly at 01:16:853 . you can navigate to 01:16:853 and drag the anchor point until it's right on the slider ball.
01:30:269 (5) - personally I think it would be better if this slider could be a wave shape
02:27:764 (1,2,3,4,1,2,3,4,1) - x.x this is a bit hard to read, you win
02:52:040 (5) - same as 01:30:269 (5) ...
04:03:591 (5) - ^