Thats making the game not fun and a lot slower. Not even CK2 forces you to do something so obnoxious. CK2 lasts for 600 years because casus belli are limited for most characters and the game accurately reflects feudal law. In Bannerlord, war is declared for the sake of making war. CK2, you need a reason to declare war. CK2 lasts 600 years because you can spend those 600 years trying to inherit claims on empires and kingdoms just so you can make said war. Hell its very easy to make money in CK2 if you know what you're doing. Now imagine if instead of adding religion overhaul features, crusades, Paradox one day decided to make trade posts worthless. I don't get the reasoning behind nerfing money making other than making it grindier for a pair of socks. The best way to expand the games longevity per campaign is more features like complex diplomacy, casus belli, religion, culture being more than an insignificant bonus to map speed, etc.