Also to your point, every time it's been polled, the results have shown that many of us are part-time Windows users. It's nice to have a Windows for Mac Users kind of place to go for help for those of us who use Windows sometimes, especially since if we post in a forum like that here, then we can start off with, "Okay, I know how to do X on a Mac..." which we could not post elsewhere.
Perhaps if we used that kind of branding / theme -- as a Windows for Mac Users (perhaps in conjunction with the Windows on Macs forum), it would be appropriate. We could have for instance a Windows "Group" of forums, in which one is a Windows on Mac forum and one is a Windows OS / Apps forum. Or we could have a Windows forum and make one of these a subforum of it.
Would that make this less unappetizing for those who are worried about the overall impact on MacRumors?
You could put it right at the very bottom of the page and I would be very grateful indeed.
Quality, not Quantity!