If you read mysterious akavir you'll know this guy was beast. He was the leader of the Kamal snow demon invasion force from Akavir and it took a prime Almalexia and the Underking to defeat him. I think this guy would fit as the hardest endgame raid boss in the morrowind province. He was defeated deep within red mountain so the raid dungeon would let us go deep down into red mountain, that would be cool. The snow demons also invaded during the second era so hopefully it happens during the ESO which would also make sense as to why the nords and the dummer formed a alliance.

Uhh...they alreay told us Ada Soom was defeated like 40 years before the timeframe of the MMO. Besides Akavir's first organic introduction should be in the main series. Not given a watered down version in the MMO where it would be harder to do them justice.

Damn thats a shame, would had loved to see them in the mmo but i guess you have a point. Introducing them in the main series would be more epic.