Well, I'm planing several thing:
1-Add a new interface that displays all the parts of the model and lets modify them after clicking in one.
2-Joinning P files (as you stated, It could useful).
3-Add TrueForm
(suposedly, they are going to tell me how to do it at the university). Don't know if the game will actually accept it, though.
BUT, my holydays are about to come to an end, so after the next week I'll be quite busy, so don't expect a new version soon.