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