Welcome, I'm not a real big fan of having seperate forums for each topic area, it sort of spreads the site out and some people will never see those threads.

What I think would be ideal, is to still have subforums for when you're in the mood for a certain subject, but then be able to view all the C4 threads on one page. Then people will stumble across threads they otherwise never would have seen. I'd like to think some noob could inadvertently stumble across a roadracing thread and then it peaks his/her interest.

This is especially important on a smaller forum, where those subforums could become a ghosttown otherwise. Even would-be regular users won't go in there if they aren't getting participation from others.