>>301510015
They claim you can use a very vanilla unity humanoid rig now and still get good results, unless the proportions are way out. Realistically, it will probably be better, but I suspect there will still be a few hacks that people will figure out for best results. With all the flexibility though, I doubt you'll want to actually mess with the default rig of your model, but instead do stuff like swap out the mesh for a "laying down" mesh with different weight painting.