Every game looks like an expansion/mod (Not even a total conversion)
Unrealistic, yet it claims to be
Low Replay Value
No Call of Duty game is worth over $25 (In my opinion)
Call of Duty only got noticed because of aiming, it was the only thing that separated it from other shooting games
Development is rushed (Make a new one every year, I think they should back out for a while to make a new engine)