Generally I like to make animations in Gifs to post on twitter. I always face a problem, usually each animation has a different time (with loop). I think it would be very good if I could put a loop inside another file with different speeds.
I imagine something like clicking twice on the frame and opening a window where I can make an animation with x time. When you return to the main animation, the square can be another format to represent.
Or instead of this work, it could all be a place in another file.