I'm also curious about palm bending...pinky finger to thumb.  This comes up a lot when creating pose sets...that, and tolerance of movement of the shoulders in extreme positions which bring the shoulders and arms inward.  In both the pinky/thumb and shoulder inward bend, it's as if the core needs some way of being as if hinged, the way the hand appears naturally when cupped inward.  This action/appearance may not be possible in a model, but just thought I'd ask, as they are the two problem areas I encounter most often.

Things are looking great by the way.  If Dawn's weight-mapped movement is as good or better than Roxie's, it will be wonderful.  Looking forward to the release.

:)