Playing with the RBD's in Unity, noticed a few attributes that don't exist that maya has and I use.
No Bounce, or Impulse (translates and spin).
Bounce seems to be the tricky one. Tricky b/c even in maya how it loses energy is not as straight forward as a divide, otherwise it vibrates forever. And in Unity it will be adding up force, vs losing the 100% opposite directional force.
If its not built in, I can script something, but I'm surprised to see that missing. I think I'll start making a .js toolset for RBD's to add these as needed.
Side note: I need a laptop at work to play with as Linux and work computer are both reasons I do not to have it here.