I feel your pain. V4.x and LaFemme are very, very different figures. Even I can see their rigging and such are generations apart... I've a mall of stuff for V4 and kin, both commercial and freebies. I've sorta figured how to use CrossDresser to port more. Um, perhaps... As yet, I've only a short clothes-rail for LaFemme, barely a weekend bag for L'Homme. But, the essential feature is surely Poser's strategic break with generations of increasingly photo-real Daz figures, for better or worse...

Now, if Poser really, really wanted to break from Daz' legacy, supporting import of PMX & XPS figures would open the floodgates... Full support for 'recent' FBX files rather than 'legacy' v6 would be a good start, IMHO, as Poser seems to choke on v7.x rigging.... ( I'm trying to learn Poser rigging as a work-around. Like trying to fork 'pouring sauce'... )