00:09:014 (1,1,2,1,2) - this overlap is not only strange, it is ugly. Change to something more visually beautiful would be cool
00:25:530 (4,5) - it would be interesting to remove these circles from the stack, as it would be a great way to emphasize the end
00:02:946 (2,3,4,5,1,2,3) - i would really change that to 1/1 sliders, would work very well, because representing the way it is, it really looks like an easy diff lol