I'm really excited for it. You'd be a fool to expect the groudbreaking game it once was. But it's reasonable to expect a fun, action packed and interactive experience.
As long as the gameplay remains fun throughout and not repetitive/boring then it'll be a success for me. I also don't why it should get bad reviews considering CoD gets 10/10 across the board with it's 'on rails' gameplay and non existent AI.