Was a fantastic game, but the one thing I grew tired of in that game, and many others, was the lack of choice. Being forced to choose from limited set classes did ensure some sort of balance, but CoD4 gave me the freedom to adjust to other players playstyles
and allowed me to play the game my way. Balance issues aside I like the direction IW went with CoD4 the most. Too bad they were forced to shovel out crap with MW2, that game had a lot of unrealized potential imo.