many of the higher difficulties are severely overmapped, there are streams that simply don't follow any rhythm present in the song, if you want to create higher difficulties i'd suggest doing so through more challenging spacing as the music does not justify the dense rhythm that the maps currently have
00:45:737 (4) - slider end has equivalent vocal impact but additional impact from a strong drum sound, leaving it like this emphasizes the weaker sound over the stronger one, perhaps change to two circles or a reverse slider