The likelihood of this happening is extremely low. And the likelihood of getting a high enough budget is also zero. Anyways, with the said..
I just though of this, and it might actually make a good TV Series. Morrowind's mainquest and the culture of Morrowind allows for great complexity. There could even be "filler episodes" with the protagonists of the series doing "side-quests" if you want longer and more seasons. The pilot episode could have some sort of prologue showing the Battle at Red Mountain.
During the course of the series, House Dagoth and Dagoth Ur could be built up as villains. You would get glimpses and learn more and more about the backstory over the course of the season (or seasons).
What do you guys think?