If they decided to show any piece of gameplay...I'd like to see a conversation held between the player and an NPC and/or a conversation between 2 NPCs. Although very doubtful, but hopeful.
This plus all races are the things I really want to see the most
Im taking a vacation for quakecon in august can't wait to go party it up in Dallas and walk around quakecon hung over drooling over Skyrim while my friends who aren't interested in the game go do whatever it is they do at quakecon.