I'm sure I saw something here about using the Cloth Room in P5 for a dynamic breast model. Sometime in the last couple of years, I think. Elbows and knees seem to be the biggest problem, they're certainly where I notice things going wrong in a bend. I wonder if these methods could be applied to those joints? I reckon, myself, that having a straight knee/elbow as the zero-position it making things difficult. Current designs seem to be good for a little over 90 degrees of bend, with a bit more being tolerable sometimes. Start from a 45-degree bend in the mesh, and have the straight limb at -45, and it could make a big difference.