Just a few suggestions...
  1. Link colors... The link colors in the showforum template list are a little hard to read. Maybe darken it up a little bit.
  2. I mentioned something in another thread, but collapsable side bar. I thought it was in the header template but it doesn't appear that it is.
  3. Switch the forumhome status icon's colors. The red color in the icon should be the one that says there are new posts. I was confused before thinking there were new posts in the other forums.
I have a few others, but I'd rather talk to Jon about this online in person. Shoot me an IM when you get the chance Jon.