Haha, great idea.
However the ONE thing that we can only build up with time is our tech information base... threads like the 5-speed swap one in e36, we need to fill it out with as much info as possible.
And I agree about bringing in knowledgable people, however with a smaller active userbase, it'd be more difficult to lure in higher knowledge users. I think those would come with the flow.
However a very complete technical knowledge base in our forums doesn't help at all unless we're in the search engines for people to reach us. =/