Glen: the following suggestions are not necessarily what you are expecting or asking for, but they reflect how I think about building success in the real world. It is not the complete answer, especially from a technical perspective, but I think it is a good place to start in the "Real World". Create a set of levels with positive labels (so no one is insulted!) and assign responsibility that is manageable at the level to which it is assigned, so that responsibility is meaningful. Some will be upset because they will see this as underestimating them; however, if the path upward is clear and the rules are open, (and there should be a credible system for this) it can be promoted as a challenge, so it can stimulate these levels to go for the challenge. And they should get help to truly succeed because that is the all round best outcome. So there would be categories of local governments associated with sets of authority and responsibility. If this cannot be done the preconditions for success are unlikely to exist. Next, performance should be meaningful. If a unit performs consistently well, it would be eligible (and should get, at the time of review results are confirmed) for promotion in terms of authority and responsibility. To avoid favoritism or its converse, all results would be public and verifiable (if this can't be done, forget the whole thing; there is not enough trust across the system for it to work). If performance is consistently poor, demotion should be possible; for this, there must be a trusted authority and transparent results that are difficult to refute. Nevertheless, this will be most difficult element to be accepted, for obvious reasons; a review and support system that helps the unit improve, is the desirable option. A good strategy is to be conservative and assign potentially weaker performers to a lower, or preliminary, category so that the likelihood is their exceeding expectations and thus, gain promotion. In general, you want to make success (real success!) more likely, so positive results build confidence in the subnational gov't and with the system as a whole.
Fitz.