That isn't a bad idea in the least. If the users of the new wave (or any user for that matter) are only interested in CO work, they can use that without the 'troubles' of navigating through the forum, but if they want something else they can easily find it. As of now the current arrangement seems to work (though I don't know the true mechanics behind the forum) well, but we are getting more users on semi-regular basis. That probably doesn't count as a wave, but after the initial rush, we've gotten A LOT of new people, mainly from the CO boards.
In short, I'd keep an eye on the amount of users even if there is no 'wave' coming.