00:11:459 (3) - Flipping this across the horizontal axis would increase aesthetics as it currently looks very cluttered and would also give good flow as players would be able to move their cursors' to slider 4 more naturally as slider 3's tail would flow into it.
00:19:302 (1,2) - Overlapping can be fixed by moving 00:20:207 (3,4) - a bit to the left and 00:19:302 (1) - a bit to the right