It'll be interesting to see how they bring Tamriel to the MMO genre - personally I am hoping they keep but evolve the combat model and don't go the "WoW has lots of players, let's copy that!" route. I am a long time MMO player (since I picked up Everquest in 2000) and a big fan of The Elder Scrolls, but I see a lot of opportunity to cock this up.
Time will tell. I am cautiously optimistic :)