She's supposedly got more-better rigging... "Twice as many points of articulation than before", whatever that means. Two elbow joints? I don't think so... A couple more joints in the shoulders, hip/thigh and trunk would be nice, though.

But, "DS Only" is a killer.

How about metacarpals, articulated toes. Fully rigged face with over 30 bones. 4 bones iin the tongue. No Tri's in the mesh, lower mesh density. 13 bones in the shoulders neck stomach and torso. A weight mapping and uv system that is compatible with top end 3d software..... but not Poser. Native support for pbr render materials.... HD morphs........ .... ....

Aside from  DAZ ditching their Triax Weightmapping for the Dual Quaterion weightmaps and the UVs so they now load in zbrush, substance painter, etc without overlapping (which is why Poser support is missing), the biggest shock for me is: Vickie 7 has an anus.

I kid you not. 

Texturing will be an adventure now.