Frankly speaking, it is simply impossible to come up with something really new in the first-person 3D shooter genre. No matter what you can produce, what scenery you manage to create and how complex your scenes are, - everything has already been done before. So, even if the game is selling millions of copies, it will most likely be severely criticized by the press and reviewers for offering nothing new and out-of-the-box unique. A similar thing happened to the very first version of F.E.A.R. game.