I am not sure if this is relevant for this forum.
But just a food for thought. (:
Looking at the rise of prototyping tools in the market.
I am thinking have you guys thought of leveraging existing GSAP to create a prototyping tool?
Something similar to Framer studio.
framerjs.com
Designers are open to the idea of coding.
GSAP has an extensive animation library with a good track record that it is well performant across devices.
And the good thing that the code is even reusable on responsive web. For native animation in Android/iOS, I am sure the mobile developers will be able to glean the code to get useful motion attributes out from it.