So, to expand upon my Tax vote with some analysis (because YAY TAXES 
)
[][Tax] Food, labour, or coin
This is incredibly complicated, and specifically called out in-text as being extremely complicated. Expect problems if we do this, both immediately (hard to make the rules work) and long-term (hard to keep all three values in sync with each other)
[][Tax] Food or coin
This is short-term optimal. So long as the harvests are good, the elites pay in coin and the farmers pay in food. The problem then comes in those who are neither. It's not really practical to maintain a small farm, so if you want to try some new innovation that might or might not work it's hard to save up enough coin to both fund the project and pay your taxes.
Furthermore, if we do get a bad harvest, the rural farmers are in a lot of trouble. They don't have coin since the goods they sell (food) is ruined. They don't have food, it was ruined. Thus they either don't pay their taxes or they pay their taxes and starve.
[][Tax] Labour or coin
This is simple: the government wants some large public works project or other government-run low-skill job. They assign some minimum wage and if you don't have the coin, you do the labor. Only unskilled labor need apply, as any skilled labor has coin. Even farmers will have plenty of coin from selling their food, and if not then they have the time to do labor for the government.
It's worse in the short term since it's a bigger change for the farmers, but it also forces them more into the market to sell their food at a higher price than their labor would be worth.
)[][Tax] Food, labour, or coin
This is incredibly complicated, and specifically called out in-text as being extremely complicated. Expect problems if we do this, both immediately (hard to make the rules work) and long-term (hard to keep all three values in sync with each other)
[][Tax] Food or coin
This is short-term optimal. So long as the harvests are good, the elites pay in coin and the farmers pay in food. The problem then comes in those who are neither. It's not really practical to maintain a small farm, so if you want to try some new innovation that might or might not work it's hard to save up enough coin to both fund the project and pay your taxes.
Furthermore, if we do get a bad harvest, the rural farmers are in a lot of trouble. They don't have coin since the goods they sell (food) is ruined. They don't have food, it was ruined. Thus they either don't pay their taxes or they pay their taxes and starve.
[][Tax] Labour or coin
This is simple: the government wants some large public works project or other government-run low-skill job. They assign some minimum wage and if you don't have the coin, you do the labor. Only unskilled labor need apply, as any skilled labor has coin. Even farmers will have plenty of coin from selling their food, and if not then they have the time to do labor for the government.
It's worse in the short term since it's a bigger change for the farmers, but it also forces them more into the market to sell their food at a higher price than their labor would be worth.
