I think ESO is going to have an uphill battle and might go the way of SWtOR. *If* it was essentially Skyrim but with hundreds of other players, I could see the game doing very well with a subscription system, but with that one leaked gameplay video... I really doubt the subscription plan will last for long.
It just looked so damned ugly, boring and average. If it didn't have some of the lore elements of the Elder Scrolls as well as some of the more iconic armor, I wouldn't have known it was an Elder Scrolls game at all. Even the visual style seemed different from the traditional semi-realistic Elder Scrolls style. It just looked so cartoony. Like SWtOR.
And after seeing some Everquest Next videos? Yeeeah, good luck ESO.