[General:]
For Easy and Normal, at 01:21:674 to 01:32:288 I don't get why there are a lot of overlaps. There's nothing rhythmically or visually that leads to this. Its worse in Normal than Easy since I couldn't even get it the second time playing it. I just found it odd. If you are going to keep this however, you might as well keep the pattern going in the second half of the verse.
Also, I don't understand all the reason for timing points at around 02:48:013 It just switches the volume around from 60 and 10. Its not like the music gets any louder or quieter.
If you can, I think a spinner near the end of the map (not the song) may fit nicely.
Nothing noticeable.
00:15:959 (2) This looks odd.
02:42:388 (3,3) If you delete these two circles, it will give a kind of good "waiting" period between 2 and 4? Its hard to explain, just try it out. Just a thought.
Just one last thing, in places like 00:55:245 (1,2,3,4,5,6) it might be better if you combined 4 and 5 into one slider. Talking about this pattern, this isn't replicated in the last chorus but its in the first two. Just thought I'd point that out.
Just in general, I think 1 beat overlaps/stacks like 00:35:959 (2,3,4) are odd and it seems like too much of a delay, since a lot of stacks have objects that are 1/2 or 1/4 beats apart. Just a thought.
00:14:531 (6) I think it would sound better if you took the repeat off of this slider.
02:42:388 (5,5) You could delete these two and then add a circle a 1/2 beat before (red tick just before) both of the 6's. It would sound better.
03:00:959 (1,2,3,4,5,6) Just out of the blue, its ironic that the place where the pattern doesn't happen in Normal happens only here in Hard. If you want to have a little variety [from Normal], you could change 1,2,4, and 5 into circles instead.
03:06:674 (1,2,3) It would look a lot cleaner if this was all just stacked neatly.