... Happily ever after for everyone? Are you sure you're talking about DAI? Or is this whole epilogue-thing something I only dreamed about - one where Inquisitor's accomplishments or lack thereof change the landscape of power in Thedas? Who becomes the divine, what will happen to Wardens now, what's going on in Orlais, who stays in Inquisition as a friend and who leaves - and what's going to happen next, in next DA or DLC for this game?
Those are all questions that are yet to become answered - and nothing in DAI's ending screamed 'it's all going to be well from now on!", even if the way we played had a more or less positive outcome in case of certain events.
Also - correct me if I'm wrong, but wasn't it Inquisitor who re-sealed the breach, thanks to the power of the Anchor? They had to weaken Corypheus to rip the orb from his grasp, true, but guess what - Coryhpeus being weakened and desperate is not something that just happened out of nowhere: actively weakening him and his supporters was what we were doing ever since Inquisition found itself in Skyhold. The fight above Temple Of Sacred Ashes was merely cherry on top - putting an end to a desperate madman who had last ace in his sleeve.
There goes your 'anyone could do this'. Well yeah, anyone could maybe defeat Cory (though they'd have no clue how to seal re-opened breach), because of all the effort that went into not making him a threat, lol...