As long as we're on a roll with the non-group join plugin...make you have some thoughts about a Featured Forums plugin.
The concept is this: A site really has 2 kinds of forums. One type is large, general, and meant for everyone to participate. The other type is small, specific, and tied to the subject of a specific group.
Most Sites would have some large, general forums (like Support forums).
Ideally, on the Forums Page, there would be Featured (or General) Forums at the top, in their own table) and Group Forums below them just as they are now.
Site Admins would just check a box next to which forums should be featured.
This would be hugely popular as many buddypress users are unhappy with how forums are displayed. And, it would be much more user-friendly because this would be the type of layout that most members and visitors would expect.
These 2 plugins would bring the best of bbpress and the best of buddypress forums together.