Implementing both F2P/Sub is also an option

[Starlord]

The Secret World isn't F2P, it's B2P, like Guild Wars 2. You pay $30 for the game, and then it's free to play, with a cash shop and an optional subscription.

F2P and B2P are one in the same to me except you have too pay a one time fee for B2P. I personally don't see much difference outside of that. You could say FFXIV ARR is B2P w/ subs