Take this animation I did:
Weighting seems off, as far as I can tell. There is definitely potential, here, but it just seems very embarrassing, to be honest. I've asked for help on Blender Artists. Waiting for any clear advice that'll help me improve on there. Hopefully by the time the more sophisticated character animation comes along in the film (Parts 3 and 4), we'll have some pretty solid animation ready for the heavy stuff.
Otherwise, I think the film will sag under the weight of the failure at animation, and probably collapse.
Hopefully that doesn't happen!