-I agree with Shiirn, on the sliders it does effect tick rate 1 sounds better on every difficulty than 0.5
-Not 100% sure on the BPM statement as it doesn't sound too bad to me , but double check it
-Kiai should be consistent at least on all of your difficulties
Basic:
-Not the most beginner friendly difficulty, it would help if you try using the largest circle size instead
00:16:005 (1,1,1,1) - beginners often have trouble with spinners so not a good idea to have so many in a row (also isn't too creative)
00:35:893 (1) - might confuse some beginners but up to you
Advanced:
-HP 0/ OD 1/ AR 5 doesn't really fit as balanced difficulty settings...(and looks bad when compared to Another)
00:16:005 (1,2,3,4) - big gaps don't fit for this type of difficulty when everything else is close together
00:17:331 (1,1,2,3,1,1,1,1,1,1,2) - the HP goes down pretty far with this calm part
Extreme:
-Same HP problem with the slow parts but I guess not much you can do about that
-I am ok with AR 9 but I wouldn't suggest to have both AR/OD 9
01:07:712 (1,2,3,4,5,6,7,8) - kind of pushing it imo
01:30:251 (1,2,3,4,5,6) - ^