Yes, give it some time. After all, Morrowind is famous because of the countless mods, not because of the basic core though that one is good as well. (Tribunal and Bloodmoon are simply a really big mod in my opinion.)
As for a Nerevarine movie? I'm not sure. They would have to freeze the idea of just who the Nerevarine is. If I would see that movie and then played some Morrowind, I would be constantly comparing my character with the one from the movie. So I think it's best if there isn't a movie about the games.
On the other hand, no one said it wouldn't be cool if there is a Tamriel movie that establishes a new story.
