December 2, 2013 8:26 AM EST
I'd love a Hardcore mode similar to New Vegas as well as new schools of magic (poison spells, holy spells, etc) purely for some variation.
I would also personally like some way to create a follower for yourself, building it up like your main character, similar to how Dragon's Dogma works, so that followers are more than just pack mules, but a character that you become invested in.
Other than that, some real moral choices that have real outcomes, not just a different line of dialogue by one NPC.