I think you have evolved to the stage where you should be looking at Indie games that need modelers. Although you may want to look into teams that are using the unreal engine or the crytek engine.
if not, I sugest thinking about working on portfolio models that will challenge you but will also be "epic" when completed. Lots of concept work out there!

If modeling is something you are truely doing for fun, then its really something you have to decide on. Because fun is spending or better said wasting time for something you either love or enjoy doing and in this case you are the only one who can decide what games are truelly fun.

Blah typing this off my phone so sorry for any mistakes....
Btw wrong section? *this is the studio section*