00:51:262 (8) - 00:54:021 (9) - These kinds of sliders kind of break the flow imo... You could just use a normal wave slider to emphasize the strong sound. The thing to make people realize that you are following a different sound can just be a slight deviation of visuals. Try https://puu.sh/GDeRV/babd2933ca.png
I understand your complaints, but I think your suggested replacement does not fit either. So I'll keep it for now.
00:56:779 (7) - This shape is just random cuz the sound isnt as strong as the previous ones, you could just follow shapes from 00:56:090 (5,6) - tbh and it'll work fine
00:58:848 (6,7,8) - The angle of flow here could be improved imo cuz its too sharp as of now. Stack it on 00:58:159 (1) - to give a wider angle
01:04:193 (4,5,6) - I think rotating it to the right would flow better. https://puu.sh/GDeUD/ea1eea3afe.png
01:09:538 (3,4,5) - Theres no need for an increase of spacing here imo, maybe making a square jump might fit better
Yes, I guess squares fits in music, but I don't really like square jumps, so... Attempted to fix anyway.
02:27:297 (10,1) - Uhh this spacing doesnt make sense here, try smth like https://puu.sh/GDeZl/69594ab474.png
02:46:952 (9) - stack on 02:47:469 (2) - head and move 02:46:262 (4,5,6) - up a bit to make the jump flow better