A big continent FTW!!! I want huge maps and on-the-fly loading of new sections as you move, like in Morrowind, but this time I pretend continuity between indoor and outdoor so that you can, for example, look outside or inside through the windows and even attack through them, foes can chase you out of dungeons until you can leave them behind or counter-attack or get help, etc. All this requires RAM, next gen will have to have lots of it, as right now it's already dirt cheap and it's a thing even the cheapest entry-level PC's can afford in good quantity.