Ok, question #1: do you need someone to carry your bags to that party? wipe your brow, hold mic cables out of the way for safety?
Question #2: (and I think this ends up being more of a game designer question but I'm going for it anyway) How do the changes around shields, health regeneration and the addition of health packs change the mechanics of the game?
Question #3: Ok ... who is the big fan of Firefly over there? (I counted three characters in the last trailer...) I'm a fan myself 
Question #4: Somewhat related to #1, do you find that people who are very used to Halo 1,2,3 tend to run into firefights and get shot up assuming they have shields?
I'll stop there, but I'm interested in the answers to some of the other questions as well (changes to the engine, rendering, etc..)