"To say that V4 (or any of them) doesn't bend like a real person is a moot point, since the bending is only limited by the way the geometry and bones are designed, any and all of which can be altered by anyone with the knowledge and the persistence."

Sorry, but I disagree.
V4's cr2 is so complicated that most "advanced hobbyists" don't even know where to start.
Someone like XAA or Anton could probably do it.
Phantom3d already gave us a short glimpse of what V4 COULD have been.

But changing her rig would break each and any clothing made for her, and if you use the morphbrush, make her incompatible with D|S, so you'll be in the same position like any other independent mesh creator:
No "official" support.

No, we need a mesh that is "perfect" right from the start, optimised for Poser and it's new morphbrush technology.
Something the normal user just can "use" without having to do stuff by himslf, but yet so "simple" that the advanced users still can tinker around with it.

A Poser mesh doesn't need a gazillion magnets and "morphforms" to bend.
Smart rigging and a few fix morphs is all what's needed to get optimal results.