Province features should level up

[Michael Gladius]

Within a province are a collection of farms, villages, minor castles, and monasteries. These should all be able to level up if the province is well-managed. Higher-level farms would obviously produce more food, but also introduce more population and eventually workers. Higher-level monasteries would provide more piety, books, and eventually workers. Higher-level towns would produce more manpower, workers, and wealth. And so on.

 

The province features should all have unique icons to show what level they are at, both for ease of reference and aesthetics.