Multiple collision polygons for a single animation

Can not create multiple collision polygons for a single animation?

I do not know if this could be done in the future, but it would be very useful.

Each frame can have its own collision polygon.

If you need different multiple shapes during runtime, the best workaround right now is to compose the shape out of multiple objects.

To my knowledge there were two C2 plugins that could handle collision polygon changing during runtime, the polygon plugin and Box2D+ Maybe some portion of their functionality can be ported to C3.