CloD should be an MMO

Well, to my knowledge it was discussed and planned by MG to make aaa guns playable.

I have some small doubts if this will really interest ppl beyond a certain trial time to satisfy their curiousity (might be boring to just SIT there and wait for a bomber to fly by).

But: It is indicating the direction.

I do think it would be possible to make tanks playable with the necessary degree of detail to stand ground agains common stand alone tank sims. I also think this is more appealing than a flak gun.