Well, I can only see disappointment in such a movie!
For a start, how are you to please all the fans?
Main character in movie = mage = not good for all non mage players.
Main character in movie = archer = not gonna please non archers.
Main character in movie = thief = not pleasing to assassins.
Main char ................. the list goes on!
The thing is, SKYRIM allows us to choose one of many paths for our character to take. It is a simple fact that a movie would have to follow only one path and thereby remove that choice. Should a movie have multiple 'main' characters following different paths that cross but still all individual then that would take the essence out of the story so to speak. Although we can meet many non playing characters or even have companions to aid us in our game play, SKYRIM essentially casts the player as a singular entity.
Besides all of that there is this;
I would say no to making a movie about this game reasons are:
Streetfighter the Movie
Mortal Kombat the Movie
Bloodrayne the movie
Tekken the Movie
DoA the Movie
Dungeons and Dragons
And the list goes on.
All of them butchered the original story line, and were kind of horrible to watch (especially those directed by Uwe Boll)