I like this solution. With peak coming up lets hope Cheryl is on it.
I don't know how the back-end of this particular platform works, but the ones I have worked with have been fairly easy to setup a system like this. There would be a little more legwork running it to keep people in the correct groups, but it is very do-able.
Also in this section, once it is solved it could be locked so people can keep posting on it or bumping old posts from months before that aren't really relevant anymore.