I really like the way the site looks and works, but I there are always improvements that can be made. These require real knit-picking, by the way.
1- Crisp-up the Seahawks.Net banner logo, particularly in the text. It could use a bit more of an anti-aliased look.
2- Maybe up the max number of quotes within quotes. It can sometimes be kind of a hassle replying in-line, then getting rejected for having too many quotes within quotes.
3- Charge a fee for 49er fans
4- In addition to the crazy gameday devoted forum (where you end up with 10,000 separate threads with 0-2 replies), how about one (just one) official gameday thread in the main forum for games. Maybe it's just me, but I enjoy a long multi-page reactionary single thread for games.
In any case... as long time devotee, I was just trying to dig for anything I could think of here.