Games like Planetside 2 are about to shake up how F2P MMO's are made. The engine that has been made for it is phenomenal and it's completely F2P. It blows engines like Frostbite out of the water.

Guild Wars 2 is only a stone's throw away from being F2P. It will be the future of MMO's, it doesn't mean the game won't lack polish. I mean compare GW2 to FFXIV. At it's release, i'd have assumed FFXIV was the F2P option.