What I hope is that Cory is a red herring. Something I remember them saying is that the Inquisition doesn't know what the EO is and a lot of the game is trying to find that out. So unlike DA:O where from the beginning you knew who and what was the big bad, here we don't. While we may have a title, Elder One, everything else is up in the air. So what I would like to see is the Inquisition trying to find things out. Some times they are wrong. So they may go after Cory thinking he is the EO, which might explain some of the leaks, but in reality he isn't. A pawn maybe.
We can hope...cause if Cory is the big big bad I'll be a sad panda 