I think it would be cool if we started allowing image signatures again. Even if the size limits were made pretty small. In my opinion they make forums a lot more fun and it allows users to be creative and give their posts (or maybe account?) more personality. Sure we avatars, but signatures are better. The whole text only thing is getting pretty boring, I'm getting sick of looking at a bunch of colored text links.
I can't even remember why they were disabled, could someone refresh my memory?
Anyway, you guys should totally make this happen just like in the old days when tf was the place to be