As much as I'm looking forward to it, ya also gotta be prepared for the possibility that it's a dumb shooter with some inventory and conversations thrown in. Or maybe the controls suck. Maybe the gameplay isn't very polished. It could have the best story, voice acting, graphics, lists and lists of unique powers and skills, lots of room for character development, and at the same time be a sliding, bouncy protagonist with a twitchy reticle who stops for a second when shot.
That's the thing with CG commercials... they're awesome, but don't reflect the game. Being let down too many times, ya can't help but be a bit of a realist. Look at Invisible War. Great game, but awful shooter mechanics, clunky game engine... DE:HR has every chance to rule and every chance to be a total mess.