[lolroflroflcake]

Prone works in some games, but in Planetside it would be kinda silly. Prone is supposed to be for games with a much slower pace and a far quicker time to kill like Arma and the older Rainbow 6 games where moving slowly and cautiously is important. In Planetside we have seen that your character is durable enough to survive being shot so prone is mostly just a superfluous form of movement that gets you where you want to be slower.