I think that FFA in this game would be really fun (although probably not balanced) and I think that this game has the population to support it... but now that BH has been added I'm just not sure. I'm sure the devs know how many people are online at all times, and if they saw that enough people are playing I'd be all for adding a FFA mode.
As for Call of Duty having FFA, FFA has been around as long as FPS's have been around, and the fact that Call of Duty also has it is irrelevant. This game shouldn't lose out on fun stuff because of Call of Duty.












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