Take a look back to the Crysis 2 map packs... this DLCs wasn't high played.
The people who bought it couldn't play for long time becouse there wasn't enough player! They payed money and got frustration!
So please Crytek, be an example and do it right with Crysis 3! Let it for free!
It's probably not gonna happen. They want to make money after all, the only thing we can hope for are enough players willing to buy the map packs.