I'm neutral over how exactly the guideline will end up. Both two pages and one page with two sections sound good to me, and which sounds better depends on how notable are the two works (i.e. a non notable podfic may be OK as a byline or a smaller section in a notable fic's page, and the other way around) and I doubt we will get any bloating. If fanart pieces were notable (which I imagine some are, like all fanworks) I would also make their own pages or put them in shared ones, depending on how their notability is related to another work or not. My only concern is making guidelines that will mean editors would be more reluctant to take up pages and edit -- for example, by requiring them to add sections about works they've no interest in writing about, or by allowing confusing that will mean their work will be overlooked, like in this last case.

To be honest, clarifying fanfiction/podfic/fanart/whatever in the title as a rule doesn't sound so bad to me as a reader, but I'll leave it to the editors that are on those sections of fandom to decide what sounds better.