THE MOsT FUNDAMENTAL FLAW with any figure is CONTENT SUPPORT. Talk about Topology and bending and rigging is all well and good. Maybe in later iterations they can even be fixed, but look at V4. She's got a LOT of flaws. So many in fact that there have been vendors who've made money off making fixes for those flaws. And annecdotely at least, judging from the number of people who download my freebies for the native Poser figures, people will use them.

Blackhearted morphed the hell out of Alyson2 with Anastasia and Shaeand several vendors even supported her.

The second biggest flaw that the Poser figures have are their limitation of use. Like Genesis, those figures are pretty much tied to the Poser application. The G2's and Miki are at least available  independent of Poser. It would be nice if their rigging worked in other programs as well.