I suggest that 30 days after a Big Boss' paid membership expires, if it is not renewed and the Big Boss becomes a pawn, then the role of Big Boss should automatically go to the first active manager on the list of members.
This would help keep the fellowship active.
If the manager does not want the Big Boss role, he or she would be able to pass it on to someone who wants it, or keep the fellowship active until the former Big Boss returns as a paying member, or, if no one wants the Big Boss position, arrange to have the fellowship hidden until the former Big Boss decides to come back.
This will help limit the stagnant fellowships cluttering up the fellowship pages.