00:15:178 (5) - I would probably make this into 2 sliders or something like that, the guitar makes a really clean sound in the middle of this slider. Same for every other slider thats over that guitar sound in this intro.
00:16:602 (10,11,12,13) - I think you should change the rhythms here because there are more important sounds that should be clickable (as in the guitar sounds)
I suggest maybe something like this https://gyazo.com/32d3abdf2752d3eeaa23afcf2e34a8ec
and whatever you do here rhythm-wise i suggest you do the same at this point 00:22:678 (10,11,12) - and this point 01:56:855 (10,11,12) -
i see your point and i think it's a valid suggestion tbh but the purpose was to have a not dense intro in terms of clicks.. As for the rest it's just some small rhythm variety to keep the map a bit interesting otherwise the entire first part and the outro are made by the same 2 rhythms for the entire length
01:07:953 (10,11,12,13,14,15,16,17,18,19,20,21) - quite the difficulty spike with 240 bpm stream since it's quite long and you don't have any other fast streams in the map to prepare for this.. maybe you could replace the second half with a repeat like on icekalt diff?
01:07:963 (10,11,12,13,14,15,16,17) - you could be super gangster and map this as 1/6 instead since that's what the drums are doing; just make the notes tightly spaced so they can be recognized as quick bursts
something like this https://gyazo.com/63e7ba400515ce72c38286c912dbd9c0 would be cool and playable