I'm worried about how the dragon-riding will work. I hear it may be like GWs (which I don't know anything about) so if anyone knows how that works it would be nice to know. I really don't want some sort of constant input flying as that would cause me problems.
The UI is another issue. As long as the default stays as it is it will be fine but they do like to tinker with things.
Can't see the Talents panning out as they expect though. Almost certainly a 'best' path will be set and it will just end up being a more complicated talent tree without the freedom of choice they want players to have. At least for high level stuff. Won't be an issue for open world. on saying that they could maybe allow for things like a ranged survival hunter to come back