Okay, so I haven't actually thought this out so it's really more thinking out loud than a formed opinion, but.. we know now that the Elvish gods are real. Or at least that a version of them are real. We know that because we've met two. (What is the connection between Fen'harel and Mythal? Why are those the only two at the Temple of Mythal? I'm going to pretend like maybe Fen'Harel is like a son to Mythal.) So all of the other gods, the "good" ones and the "bad" ones too. That's not going to work out that well for Fen'harel- you maybe even if 8/10 gods forgive him for locking them behind a mirror for a zillion years, you'll still have two royally pissed off gods.
The regular pantheon of gods and the forgotten ones aside, you still have Andraste (who is a real person) and the Maker. Who may or may not be real but I don't see why the elves gods could be real and not the human god. What if the Maker -is- one of the "forgotten ones" said to be against the elves? Or a god that is really powerful and became "the maker" to the humans through legend. Or maybe all of the forgotten ones are human versions of the elvish gods. What if Fen'harel accidentally locked up the maker? lol.
Nevermind, I'm just rambling now. I just think it's so fascinating all the questions it raises.