I've seen mods that have re-created the cities and people of Morrowind as a mod for Oblivion. IMO it looked perfect, just except maybe the fact that there was no voice acting. I was thinking how good it could be if Morrowind was re-created in Skyrim, thinking the improvements made about the character models and environments.
Then, another thought came to my mind. What if as part of a DLC, we could see a part of Morrowind again? If the DLCs are as big as Shivering Isles was, I don't see why it couldn't be possible. I know that Red Mountain erupted and most of the lands were destroyed but not all, as far as I know. Some Dunmer NPC in Skyrim said some of her people returned to her homelands after the eruption. And since the event took place 200 years ago, couldn't the Dunmer have rebuilt settlements and some kind of civilization in their homeland? The idea of Morrowind struggling to be rebuilt may be dark (especially after the lively Oblivion DLC Shivering Isles), but I think it suits the gritty atmosphere of Skyrim.
What do you think?

! What they get. For all the names they called my Morrowind Argonian.