I like that they're focusing on making Kinect more of a complimentary addition to games rather than forcing it as the lone control method, thus ruining everything.
I would like to add an alternate to "Comin' in the back door":
"Sneak around the backside, and give 'im a Hidden Dragon" (must be spoken with your best[worst] Steve Irwin/Crocodile Dundee accent)
So far all I can say in my short time playing is:
1.) It seems like a cross between Splinter Cell and Fallout (I won't say anything about Mass Effect since I've never played it [GASP]).
2.) That's a good thing.
3.) The timed conversation choices is a good idea to me. Makes things flow...