Summary: My idea is to allow lords and Knights, with their own gold, to create buildings that are not under the entire region command. Instead of the General "Invest in production" option that exists now.
Details: For example, a knight in a mountainous region could create an industry based on that, say a miner's guild, or a jeweller, or an armourer, without the consent of the lord and it would directly add to the economy of that region as well as give bonuses depending on what you've built.
EX: Say a knight builds an armour smith for 500 gold and creates one that focuses on the quality of the equipment rather than the quantity, it would give that knight extra income as the barracks in the regions purchase them, and it would also give whichever barracks buys that armour a higher armour rating.
Another example:
A lord builds an ale maker, it would help keep the population of that region higher, as well as give a slight income boost due to the peasants and knights buying ale and drinking it.
In that same thought, there could be specializations and trade with these buildings. Say you have an ale that has an incredible reputation for quality, two regions could agree on trade, and then the second region purchasing that ale would get the benefit of the industry.
There could be other buildings as well, like a mason's guild that would cut down on the cost of walls and buildings, or increase the defence of a region. There could be a paper-mill that would increase the loyalty/literacy of a region, schools, universities, all of these things that actual medieval towns had.
I know this might be incredibly difficult to put in, but I think Battlemaster has evolved to the point where things like this are needed.
Benefits: Increased motivation for roleplaying and trading. Increased motivation for investing into regions. Would give Casus Belli for other realms to steal specific regions. Would allow for realms with a large income but little else to invest their money into other things. Perhaps have some sort of Prestige or positive lord affects from buying art and luxuries from other realms. Would help expand the trading system that we have no.
Possible Exploits: None that I can think of right now.
