Like most forums, sigs eventually get used by spammers. We took sigs out when we switched over to Vanilla. I agree on the post count and other things though, I’ll see what I can get @robskiwarrior to look into!
I think it’d be cool to be able to put a link to your website/portfolio/twitter/dribble in your signature, or in your profile at least. I’ve taken advice from a lot of people on the forum and I’ve thought a few times that it’d be nice to find out a bit more about them professionally/follow them/make a connection.
What about a preview of the post when you hover over the post title? I like those on forums to ‘quickly’ see if I can contribute anything to the post/thread or not. Sometimes titles themselves are too vague. Just an idea.