I would like to see spears, rideable guars, and a character creator that allows for beautiful, young men and muscular, grizzled women, not just the usual grimfaced Hulks and catwalking models. The latter should be complemented by armor that is equally revealing/covering for every six.
What I don't like to see is compass markers for each and every thing, it turns exploration into sightseeing. I also don't want to see minimalistic dialog or logs or linear dungeons (Yes, looking at you, Skyrim). And I very much don't want to see overly stereotypical gender portrayals (the musclebound middle-aged grimfaces and scantly clad young women), but screenshots released so far look discouraging.
I think ESO would benefit from something like WAR's Tome of Knowledge. Elder Scrolls lore is big. A few crazy achievements would be good for keeping players in the game. While WoW's "Insane in the Membrane" was a huge grindfest, that was the point of it.