I'm not sure. More fans who don't know much about the lore - not a good thing.
Adding multiplayer - not a good thing.
Using the same art and design of provinces for next TES as in TESO, in the meaning not trying to make it from scratch by themselves - the worst thing.
Using feedback from TESO fans in developing 6th TES - very bad.
I can't come up with anything good. MMOs are meant to be fast-food of the game industry, with some exceptions.