if done correctly they would be great and amazing!
It could, but I have yet to see one that is done well. And the story in Skyrim is far from orginal, the lore is what sets Skyrim, and TES in general, apart. Combine it with characters who are unrelatable(Esbern, Delphine, Arngeir), a Hero who just happens to be powerful enough to kill dragons and a villain we don't learn much about other than that he was the ruler of Skyrim in time immemorial.
Another thing is that the most interesting conflict in the game(by lore at least) only makes a couple of cameo appearances which also prety much locks out the best written character(Ulfric).
I simply can't see how a Skyrim movie would work.