Quote - If that DSON file is going to be just a scene inventory... then I guess your plugin or importer would still need to read in those proprietary Daz Studio dsf asset files, do some on the fly catmull-clark subivision (don't know if there's a Python library for that) and then transpose the weight-mapping data....??? For starters...

The DSF file is, as I understand it, a DSON file - if you have access to one you will see that it contains the geometry, rigging and morph data. You are, however , right that there would remain functional obstacles in the form of Catmull-Clark SubD and smoothing and collision detection modifiers which would be needed by a fairly high proportion of content and are not available in Poser actively (though Stewer's comment about calling a DLL function does offer one ray of hope there), and UV switching, which I've no doubt could be handled via a Python script.