From what I know all the features of Unimesh are already in Poser for quiet a while , I think that most users just do not know how to use these. Poser already offers a wide range of compatibility it is just not right in your face, like a little button. 

From what I know about  bridges it even enables cross compatibility between Poser and Daz Studio, and I am not talking about the en-bedded features like exporting as CR2, it is sure possible to use any Genesiss model in Poser just like all the other mentioned formats NickKelly mentioned without any restrictions. If you know about Cad Exchanger so you can imagine what I mean ( A communicating cross Platform ) able to send a Mesh from one application to another. I have to ask my self why asking for something that is already in Poser just because you do not see it or you are not aware of it , this naturally makes it very difficult for the ones who work on Poser to Improve it and sure might break something if you try adding something that is already there.

What I am trying to say is that Poser actually already got it all and it is working just fine, the thing that is missing is the experienced user that knows how to use it and may be some cross Platform. These type of Platforms were releases in masses at the time as little apps or Pythons. So actually my opinion would be the need of more skilled creators that could offer these and not a bunch of members that always try restricting there creativities, 

Poser members are way to fixed on the idea that Bondware needs to add features that already exist. Causing that there are not enough creative heads left that could offer these. I remember times of this Community when People worked together to figure out solutions not just rejecting them when they came from other places. 

It could be excused as most Poser communities Closed or gotten crushed by the big ones, but you can see what is left . You are no winner if you end up to be alone.