Hello, M4M from my queue.
Here is my map for your convenience:
https://osu.ppy.sh/s/527546[General]
You can definitely afford to increase hitsound volume in general. I can't hear the sounds in many parts of the map, especially the louder sections.
[Another]
00:43:570 (3,4) - Unpleasant overlap.
00:46:570 (2,4) - Make them perfectly parallel, please.
00:55:370 (4,1) - I think this would look a little bit better if you either added a bit more overlap or if you separated it completely so that there was no overlap at all. The comment holds for other areas where extended sliders lead into slightly overlapped objects, like 01:00:170 (5,1).
01:37:570 (1,2,3,1,2,3,1,2,3,1,2,3,4) - These are large jumps for such a calm section. I see what you're going for, but I think you'd be better off toning it down a bit.
A general suggestion that I'd like to make: change slider velocity from time to time! Looking at the timing panel, I only see a few choice instances where SV briefly changes. But considering how much you rely on 1/2 sliders, 1/4 sliders, 1/1 sliders, and extended sliders throughout the entire map, I think increasing SV during areas of high intensity and lowering SV during areas of lower intensity would really make the dynamics of this map stand out.
[Collab Hyper]
00:22:170 (1) - You were mapping everything else around this to the kicks. Why is this different?
01:57:170 (3,4,5) - It might be nice to make the slider heads form an equilateral triangle with (3).
02:44:970 (1,3) - (Takes out magnifying glass) I spy a slight overlap.
Aside from that, good mapping. Just trying to look for something to point out, there were a few slider rhythms that bothered me, all of which revolved around the "don't cover an emphasized beat with a slider tail" mantra:
00:32:570 (4,5) - (5) is covering up the fourth beat with a slider tail. I would do slider then circle, rather than circle then slider.
01:35:170 (3) - Kind of awkward because the two motifs before it had a slider on the fourth beat. Maybe make (2) a slider and (3) a circle?
01:40:370 (4) - Covers up a a strong beat. I'd break it into two circles.
[Advanced]
00:28:570 (1,3) - I wouldn't mind perfect 180 degree rotational symmetry for these guys.
01:06:970 (1,2) - Same slider shape maybe?
01:30:970 - Changing slider velocity down to 0.75 is a bit dubious, and I would discourage it for this difficulty level. My main concern is the spacing disparity here 01:42:970 (4,5,1). In the very least, find a way to patch that up.
[Basic]
01:34:170 (1) - This slider has devolved to Bezier form, in case you didn't notice.
02:25:370 (1,2,3) - You may want to make these sliders all the same shape for the aesthetics.
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That's all I got. Sparse mod, so I'll throw you a star as well. Good luck!