That seems like the right way to do it. As with the rest of the forum integration, the questions are "who" and "when".

I've been observing (lots and lots of threads to sift through in here/there) and thinking about the brainstorm situation, and i think it's safe to say that the vast majority of people using it are just going to post their own pet brainstorm topic and then go on their merry way. I know this isn't going to be a popular suggestion, but i think that in order for brainstorm to be useful, some kind of quota and queue has to be established so that people will have to get behind and push so they can get their own time at the head of the line.