The issue is *about* Commons but doesn't only affect Commons, particularly the discussion around alternative methods of making not-purely-free files available and searchable across Commons. As you can see from the growing discontent with Commons, this URAA issue is not the only problem. It's merely the best recent example. The discussion you propose on Commons appears to focus purely on URAA; that's fine, a discussion like that should exist (though I object to your presumption (and odders) that the URAA RfC is discredited or nullified either by the way it was closed or by a follow-up RfC with drastically fewer participants). But the content of the various "tragedy of Commons" threads on this list and others is broader and attempts to identify and solve deeply embedded problems in the Commons culture.
So while a discussion on Commons might be easier for Commons administrators to shape and control, there is no good reason why discussion on this list (or commons-l) should be dropped in favor of a section on the Commons admin noticeboard.