why move them at all? They not taking that much room up, Stefan and Unixmad have enough server space for like 20 more Graal2001's.
I think that the playerworlds should be able to stay up, unless its doing terribly. I mean, it shouldn't even come to that, the Owner should know when to shut the server down -_-
Oh well, I just hope some new playerworlds will come up, like that Maloria or whatever, if it seems as nice as everyone else says, it will have many players =)