Graphics are ok...but were is the new gameplay? It looks identical with a shield and I know there are like mines now. I hope there are at least new game types because they didn't change all that much from a gameplay standpoint from what I have seen. It basically looks like Halo. Not that it's a bad thing but I'd like to see something fresh and new added to the mix.
maybe this will shed some light for ya:
http://www.joystiq.com/2007/04/24/joystiqs-video-analysis-of-the-halo-3-beta-leak/