Showing off some of the new topology changes with a yawn! I left it uncolored and untextured so that that the deformation is clearly visible.

This also demonstrates the difference that skin weight painting makes. Skin weights basically are manual adjustments to what vertices of the skin a particular joint will influence and how much.

Frankly, its a major pain, takes forever, and has to be done every time you rebind the skin (still trying to figure out how to get importing skin weights to work properly.) So, I try to avoid it. But, properly testing the waist, arms, pelvis, butt, and legs required that I do at least a light pass of skin weight painting. This was required a lot, as I was experimenting with quite a bit of interactions and variations.

The left side uses the older mesh topology and no skin weight painting. The right uses the new topology and extensive skin weight painting.

The neck's weights could stand some refinement, but that's because I messed up the initial positions of the neck joints. I also kind of messed up the order of things on the skinning of the older version, so the face is really messed up, if viewed from a different angle. I didn't upload that image, but I did stick in my "gallery of horrifically failed experiments" folder, right along side the pictures of the eye textures that are behind this image's "Nope!" censor bars :D