We've been around the block a bunch of times. Someone in charge of this thing simply won't let the game be like how it is in that trailer. It is a tale as old as time.
The thing I really like is the blurred out faces. Faces are the thing we humans recognize most, and can most tell are "off" or not real. And the premise of the game (I assume) where this is all "recorded" and therefore the faces can be blurred out is a great decision. Hiding the biggest weakness.
But someone will interfere and make the whole thing a Quake clone where you are jumping around and walking over dog food for health.