My own simple solution would be to elect a "policy advisory committee"
*The PAC would only consider policy areas, and only as a last resort, where the status-quo
did not enjoy evident consensus, but where repeated community attempts to resolve the
problem had proved futile.
*The PAC by majority voting would define the issues, call for evidence of the problems,
and assess the possible reform possibilities (like an arbitration, the community free to
make submissions).
*The PAC would vote and either endorse the status-quo or a "preferred solution"
*If a preferred solution emerges, this would go for community consultation and then be
tweaked by the committee.
*The final "preferred solution" would then be set against the "status
quo" in a straight up/down community vote.
Scott