The physics engine looks very advanced, and uncontrolled characters having bio-mechanical AI if thats not a step towards the perceived limitations of video games I don't know what is...I guess nothing impresses the rest anymore, or you've just seen it all already somehow.
Anyhow the game still looks awesome, overplayed/weak plot aside. Not to mention when I buy a video game I'm not that interested in the plot since they are all horrible I buy a video game to play the game not to be riveted by a story.
Also any indication that the game play will actually be limited compared to what has been shown is just hearsay.