It could be interesting to have an exporter for Poser. But Openpose does not have a very open License. It's just free for noncomercial or academic use. I doubt that an exporter would be a success with this limitations.

A commercial license costs 25000$ a year, a bit too much for the Poser community, I guess.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.