I was thinking, mybe a special topic that takes place in an empty room? Lemme explain:
THe empty/white/ whatever-you-want-to-call-it room is like a small place to RP when you are waiting for posts in your RP threads. Your character "appears" in the room and can randomly RP with other players in that room.
But on the other hand, to keep people from abusing this feature, no Poke (unless the Admins want) or Exp gains from going in and out of the room, and any items or relationships are forgotton upon leave.
It doesn't have to be a room either. If the admins chose this feature, it could be kind of like a dream world or something.
Other feature Ideas for it:
~Landscape instead of empty box
~RPers can "summon" any wild Pokemon
~Dream World?
Eh? Thoughts?