Allowing Group Layers to have keyframes and the ability to turn on Onion Skin in the parent Group Layer would be so convenient. It would make life so much easier! Fumbling around within all the sub layers at the moment is pretty crazy. Turning on / turning off certain onion skins and creating keyframes for individual sub group layers makes things harder to manage.

Something like this: https://youtu.be/d8-t-yedMn8?t=679

I really love Krita and will always support Krita. Improvements to the animation workflow would be amazing.