I have always hated the tiny maps in the Call of Duty games, especially Nuketown. I still have a lot of fond memories of Call of Duty 2, like actually being able to have some sort of tactics. However I have noticed that with each game the maps keep getting smaller and smaller. The amount of mid-size maps in Black Ops 2 makes me sad, let alone the complete lack of large maps.
I have been playing this series online pretty consistently since I first bought my 360 and played 2, but this is the first time where I think I might just pass on the next one. The only way I will buy the next installment on launch is if they actually fix the horrible lag compensation that allows me to shoot someone in the back with half a clip only to have them turn around and kill me in just a couple of bullets.