(I consider this idea to be secondary to Classic Maplestory)

If the concept of Reboot where to be fully realized then I think the best way to show it would be for the Reward shop to be nearly the same as the Cash shop. In other words almost everything that could be bought with Nx would be unlockable through enough game play. For example, Meso sacks could go in the regular cash shop but they would also go into the Reward shop at a different price.