If we want to discuss the economy in the game, I think we all need to know how it works.
I am making some assumptions in my questions and breaking the economy down into 3 section model, raw good production, finished good conversion, and consumption. This may not be accurate, but its my best guess from what I can see in the game.
How do raw items such as grain, hardwood, etc get created: Is it based on just the villages' stats, are the stats for all the connected fiefs considered? Does price affect how much is created?
How do raw items get converted to finished items: Is it a raw conversion formula? does the price of inputs or outputs affect the conversion? Does the difference between inputs and outputs affect conversion?
How are items consumed? Does population affect consumption rates, do prices affect consumption rates? Do consumption rates drive any other changes?
Finally, what other systems affect these areas? How do raids affect each area? What does prosperity reflect? Does prosperity, security, or loyalty change rates of production, conversion, or consumption?