Quote from CryptiK. on the 2nd of March 2016:
COD4 is dead let it die. Black Ops might pick up when mod tools make their way around.
The thing is bro, they've been saying that since Bo2 and all the cod games since, It never happens aye.
They are more than happy to just keep giving the PC community a console port and charge $100 for trash, pretty much why I didn't buy a cod after MW3.