Is there a way to create alternate skins that show some forums but not others? I have a few forums that could benefit from unrelated discussion of other forums.

Example:

Springfield board has:
Local (Springfield) Discussion
Springfield Singles
Springfield Swap Meet
National Politics
Open Topic

Shelbyville board has:
Local (Shelbyville) Discussion
- nothing else

The Shelbyville Board could benefit from discussion from Open Topic and National Politics. However I don't want to display the Springfield stuff because it's not relevant to Shelbyville.

I hope this makes sense. I have skins for different sub-forums, but I want to customize the board to include some others in there as well.

Any ideas? Have you seen this on other IPB Boards?