Minor Nitpick
I feel these straight lines 00:04:915 (1,2,3,4) - 00:08:551 (1,2,3,4) - 00:11:460 (1,2,3,4) - 00:17:279 (1,2,3,4) - 00:28:915 (1,2,3,4) - 00:31:824 (1,2,3,4) - might be better if they were zig-zagging (not intensely but subtly) so if promote jumping instead of a straight movement since it can make it harder to hit them
to be honest, i feel that [Insane] was mapped for the sake of having a spread. feels very uninspired unlike [Calmest], which i could see a concept that you were aiming for with jump angles. this diff feels speedmapped, with spacing and visual spacings being much worse than the top diff.
i do think the hitsounding on this diff is slightly better than the top diff but still feels lacking overall
I re-mapped this difficulty. I tried focusing on using squares, triangles, and linear movement, attempting to keep it similar yet not the same as [Calmest] difficulty.
I feel like it's okay because it's not blatantly obvious that it's like this during gameplay.
I'm mainly trying to make each object represent the songs' notes and pitches through object placement in combos.
Your use of playfield is not very good. https://osu.ppy.sh/ss/13529681/70b2
Consider using most of the playfield, or if you are going to only use parts of it then make it clear that it is part of a gimmick.
I think it's okay because in gameplay there aren't that many objects on screen at once. If other people think it is an issue, I'll remap this difficulty.