If you put "General" under Support, them I'm afraid a lot of the things that belong in "Experimental" would end up there, i.e. "My photo database from Windows won't run with wine ...".
But, I could imagine a "Everything Else" forum under Community, where people could ask about subjects that don't seem to fit properly under the Support subjects.
Or, if "Experimental" is not clear and understood, the title could be changed to "Everything Else (Not Supported)" or something like that.