>The MPC requires municipalities to allow for all types of zoning.

The MPC does not require that productive farmland be rezoned to commercial/light industrial. That particular zoning can be placed elsewhere.

True story: I know a guy who owned a small farm on which he had placed a conservation easement. His municipality, without cause, decided to rezone his area from ag to some form of commercial/light industry. He asked them not rezone his land as that type of zoning was inappropriate for his preserved farm and because the municipality already had an area with that zoning designation. The municipality refused his request. At the next meeting, he brought a couple of lawyers. The zoning was not changed.