A feature that would make animating in Krita less tedious is if there was a way to modify multiple frames at once (such as transforming or applying the same filter over 10 or 20 or however many frames you want.

For how the feature works, I would suggest making the user select all the different frames they want to apply whatever it is they want. If you do that in 4.1.5, what happens is it only applies the thing to the frame that's currently displayed.

It would make animating in Krita quicker and more streamlined to do this rather than apply the same thing frame by frame manually.

I can post a gif of what I'm talking about if more clarification is needed.