epiC! thanks so much Nate, you're unparalleled guys, it was just recently that Motion Builder showcased something similar in a skiing character scene so needless to say you cut edge. 2D animation has been longing for this day.
I hope you continue on with the Unity side, you patch up alot of shortcomings. did you know that we couldn't even preview native 2d anims in the Unity inspector!

This is great news, but the features page still lists ik pinning as non available, anyways concerning IK runtime implementation: will we be able to animate character meshes directly in Unity for example by manipulating exported IK handles (as game objects) or is it just to enable the baked animation to run.
And speaking of Unity, any native integration down the road like 2D system or Mecanim? that would be epiC!