Why potentially breaking people's campaigns with this tiny patch two days before the major patch? For "testing"? Existing saves already had excessive influence problem, did mexxico expect people to start a new campaign to test a feature to be completely reworked the next day? Was the team implementing the first "fix" aware of the rework released today?
I think by "economy" crewsk8200 meant the in-game system of trading and producing goods, not your income.
I agree with your point. It's more like tweaking a subsystem (economy) within a larger system (the whole game). But even in your box analogy you still need 5 "boxes", we barely got 1 feature-wise. There is so much to be added in the caravan, production, fief management subsystem.
EVE Online and X video games series are pretty good at simulating real-world economy and it works well (not only well, it is the major selling point for both games). Of course there would be limitations and inaccuracies in the models, but it is possible to make it highly enjoyable both in SP and MP.