Have you ever thought to do "skeleton path" function.
When we made Skeleton Animation.
Eg: Sometimes,We hope bones moving along the special curve.
The current "translate" only linear movement,We have built a large number of translate key frames.
I know that to calculate the perfect curve translate will result in data size becomes larger.
However,Maybe,You can add a function: we do not need to go to build a large translate keyframes, we only need to draw a curve, the curve generated automatically translate a certain number of key frames.