IDEAS

[RachRach696]

1. Vector option, like for adobe
2. Extract lineart like ibis paint when you export a photo
3. Rounded lines for the shapes, plus more shapes if you feel like it

[bitbof]

Regarding extracting lineart, have you tried Edit > To Alpha?

[RachRach696]

I did, but to be honest, I thought it would've extracted the lineart, it kind of did, but not in the way I expected, but thanks for telling me how to :)

[bitbof]

It works best when there is no shading.

You can get rid of the shading with some extra steps:

420p.mov

Maybe it could be automated though.

[RachRach696]

THANK YOUUU, It seems really helpful