Please. It would make working with animations across multiple scripts significantly easier.
Make sure to stick it in the appropriate category in Feature Requests.
OP put it in Client Features.
How would you use it?
This is a client feature. Anything to do with the API is a client feature.
You could call it on an Animation object and it would return the AnimationTrack most recently created off of it. This would allow people to, for example, stop animations from an external script without global variables or object values.
I don’t see how this would be useful if you don’t have a reference to the actual animation object. You already have Humanoid/AnimationController:GetPlayingAnimationTracks and you have AnimationTrack.Animation.
Egh, I forgot :GetPlayingAnimationTracks was a thing. Sorry for wasting your time. I’ll study Roblox’s existing API more before trying to suggest new stuff.