I would pay extra for this kind of feature, no problem guys. Take my money, please. The community needs this, the time is now!
I got all these vector brushes that are as good as raster brushes to me because of AD's limitation's, the app feels incomplete. for what the a modern designer (not static-image designers, full-fledged motion designers because it's 2020 guys) use vector programs for to my knowledge.
Pretty much AD is only vector inside of AD and outside of it you will have raster images that's a reel bummer, which is why I am in support of this feature.
Devs if you are listening, please consider it, we will pay extra.
For those of you guys looking for a solution there is none my solution is bite the bullet and make the curves in motion. Yeah it's not as good at all, and it makes AD not even needed in the workflow but that's what I do for now., until things get a bit more functional over here.