I rarely drink Bud, as I prefer darker ales.
LD, seriously...consensus is that you need to have a forum about 'something'. It needs to be of interest to both you and your users. If you don't have a focus, or are all over the place, then you probably aren't hooking the members.
Rather than trying to come up with a new idea, build your forum around your existing members and whatever it is that they are into. This way you keep your existing user base, and grow from there. Shifting gears altogether is likely to alienate the few people you have, and then you are starting from scratch. It's not so terrible to have a 'hang out' for your net buddies and go from there.
Anyway, welcome back Rob, hope you didn't get too much sand in your shorts at the beach.