Well right now I have my guild use the "Public Note" section in-game as a spot to place that character's "Forum Name". What that does is give me a comparison point. You can use the Officer note just as easily, but doing that makes integrating with Threads (or anything) a ton easier, as all you have to do is match the names up.
I did use for quite a while an expanded members area that allowed forum users to enter character data manually, and we used that for roster information and signature generation. But right now we are only playing (on a large scale) two games - DAOC and WOW. Both have XML capabilities, so we pull everything instead of hand-entering it. Makes it a ton easier.
What would you guys want to see integrated?
