I don't know if a DLC will be enough to explore what Solas/ old God would do, and I read that Bioware is focusing on adding to the Multiplayer and there is no story-based DLC in sight for now, I think that it might be either a Full expansion or it will be the next Vilian for DA4,I wonder if he is a trickster that want to end the world, sealed away old gods or just want to bring back elven heritage or a bad guy
Ok another question, i also read that there are nine old gods, those that went to slumber , five were defeated when they emerged as Archdemons, we have Flemeth and Solas, so we have three remaining sleeping gods, maybe we will get the worst Blight in the next game, where Three Archdemons arise , it would be epic to have that.
I read some place that it was Flemeth who stole Solas's body