General rule of thumb for all MMOs ( P2P, B2P, F2P): If the game is good enough for the Monthly Fee/Cost of Items for F2P/ And the game itself. The game will get a good population. The only Gripe I have is a lot of people want things for "Free" in General, If you get something for free thats a really good item, then your one lucky person to get your name drawn out of a hat for a Raffle :P.

But I still rather do P2P then F2P.