Pros and Cons of Making the game Pay-to-Play

It's laughable to think a subscription fee would work. The entire reason their business model works is because people can jump in and try the game before they have to start spending money to keep up. Their profits are off the backs of a small fraction of the player base that pay a pretty penny as a premium to stay on top. They essentially pay for everyone else. If the model was shifted so everyone paid the same amount (and laffo if they kept the cash shop open), mostly everyone else would quit. A monthly fee would nearly completely halt the growth of the player base, and Maple is not known for its grasp on veteran players.