It would be great to be able to compare physics movement properties, eg: if angular velocity > 10 then ...
Would add a little more control to some of the functions
I dunno...
It'd also be nice to be able to retrieve a physics collision, as opposed to a sprite collision. I don't know if that'd be possible, though.
For instance, I can't reliably add sound effects to my billiards demo just by using sprite collisions. They don't trigger properly because the physics collision takes place first. If we could check for physics collisions and retrieve force, not only could I add sfx, but varying degrees of loudness depending on how hard they hit, which would be pretty sweet.