I think that at least for now, exactly one section should suffice.
Nobody's quite sure how active it will be in the long term, but we definitely know it's going to have enough activity for one section to be made - either way, the only real topics that could deserve another 2007 section are general discussion and cheating. The others carry over just fine and at most can be tagged with [2007] without too many issues.
It should definitely be on the main page though - if you're worried about clutter get rid of the games section or something.