Quote - I had the thought that one could "split" a morph into a weight map plus another morph that would capture whatever the weight map couldn't do. And this in a way that the weight map would do as much as possible and the morph doing the "rest", so that one had a morph which as flyweight as possible.

Technically I think you could do this, as joint and bulge deformations are restricted to one axis ("in" and "out", in relation to the joint axis); you could examine the position of each vert and only split out the "in/out" part of the delta.  On the other hand, I dunno how valuable that would be, as you'd still need the morph target, and the resulting morph target alone would (I think) very likely be something impossible to modify without trashing it.

e: hmm, the resulting morph target would really just be the verts' sliding around along the normals' placement after the joint deformation is done wouldn't it?  Ask Mike/Diogenes/Phantom3d, he'd probably find that useful for easing texture stretching.

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