We allow players to transfer from some of our full servers to some of our lower pop servers.  And we do move some stuff with them but it would be really sweet to have an "add playtime" command so we could transfer that too without having to unload the plugin and manually copy data from the JSON at risk of screwing something up.

Bonus suggestion:  /ptt wipe - a command to reset someone's playtime (we would do this on their old server after they transfer.  But is also useful when you find someone using macros to try to sit idle all day long and earn playtime which we do catch people doing sometimes)