Free to play = death of an MMO, they make free to play only to get some fast cash then leave.
if you have ever played with other free to play korean/chinese mmos you'd know that free to play would have one if not several of the following:
upgrading items have a chance of breaking said item, unless you buy a special upgrade item that makes it 100%
purchased "rest" bonus (I.E. 200% exp gain)
new skins for old crap
access to "hidden" content.
paid character class reset/skill reset (think respec in wow)
paid character transfer, account management
all of these just kills off a large portion of the game, making it fun for a few people, usually the younger crowd that nags their parent to buy these random crap, and then they eventually leaves and moves on to other things that may be shinier