A common practice is to make a �collision� sprite, and pin an animated sprite to it.
I have a better idea.
Animated spites could have a �collision hull� behavior. When the user enables the collision hull C2 automatically will spawn a collision sprite, and pin the animated sprite to it.
This way we will only have to code 1 object, and not have to worry about containers, pining, picking the nearest instance...etc.
User just makes their spites, and immediately starts coding them... No need for elaborate rigs or setups.
I would imagine this would cut down on the amount of events needed too.