I'd like to say for the record that my original post about Fooruman being in JJ3 was a joke. That said, upon further thought I think it would actually be a pretty good idea.

The game clearly shouldn't just be a big community cameo-bag (if it's ever even finished, which is doubtful). However, having jokes/characters/etc from within the community (such as Fooruman, chickens, and possibly cornbread) would make the game more popular among its target audience (this forum).