Hi Have read some/most of your latest posts but most interested in the porting and your question about finance, historically has been covered pretty much correctly, but a few things missed the "gifting" of land always had strings/obligations. at every level the receiver owed something back .. yes from the rose to product the best systems had the "taxes" based on the lands production. and the best lands had their lords investing in them to raise their production rather than forcing the serfs or freemen to "just work harder". increasing the facilities (granery, barns, tools, draft animals etc) in the best cases serfs were given their "own" garden plots" to use for their own benefit with usually 10% returned to the lord (whatever his rank) the smart lord allowed/encouraged his standing army "to lend a hand" when they weren't training/patrolling etc and the farmers/crafters tipped them with the days meals for their work (direct benefit on several levels for the lord and formed bonds between the common folk and warriors as well as opening paths for warriors upon retirement if they got that old or injured.
The summoning of men/vassels was universal leave a small holding force (usually the retired injured and millitia. and go to your overlord's call.
Knight's were given a "boon and spurs" upon being raised to Knighthood ANYONE could become a Knight through the process: squire to Knight But rarely did Knight's become an Aristocrat, 98%you had to be born into it and yes it was expected (a mistake often) that all male aristocrats become Knights, most lacked the understanding that person risk of life and limb was the job's standard. and most looked down on the very men that kept them alive and in their seats of power, sometimes at their folly
I happen to be an actual Knight yes as in RL Christened and tilts and joust, everything , and no I don't Jest .. even before being Knighted I had this "hobby" of learning the historical and acurrate facts not just the trappings and legends.
Anyway the Boon was the Knight's choice, it could be anything reasonable except land. marriage a horse etc but usually the Knight already HAd his horse of choice and having spent several years training did not often ask for that (although they did ask for brood mares for his to get a "quick" start at wealth ( a Knight that could Train a dependable and talented war horse was a rare thing and was in great demand, m"My kingdom for a Horse" was not just a slogan/catch phrase.
what I would like to see added would be ways and means to improve product/wealth from fiefs and castles and towns invest some cash into building a industry (sorta like craft mod where you can build/develope mines, smelters/blacksmiths to make/repair or upgrade gear (such as loot froma battle field better armor would be turned over to a blacksmith to repair and re-size it for a fee etc. more farm additions like grain fields would cost an investment of plow or horse upgrade regular to draft for production increase as well as barn and granery building and monthly/yearly upkeep
also a way to control or set up caravans with guards in one game I had a pop up screen asking something about some caravans but it didn't seem to matter where I clicked (no way to select an option or town or product. and also be great to be able to start NEW villages when the starter village reached a maximum state, enabling another fief to be created/grown/protected a money/investment sink for a while but then would show returns if you could protect it well etc.
castles were the heart of local industry back then goods of all kinds made in a secure area and the towns in here and historically were trading centers as well as the more luxury items to be made linen in this case BUT cotton could be added in wet river basin areas too. cattle/pig in low-lands and goats/sheep in hill/mountain regions just some ideas
I know I read you saying you aren't a content guy, and that's fine, maybe you could get a buddy to help? I am downloading a mod tutorial this weekend so I can have a look to see if i could learn it well enough, until then I will have to stick to being a suggestion guy altho trying no to be a pain in the neck as I do it
thanks for reading this if you made it this far