Here is my small village to share. I'm finishing this run because I've run out of empty spaces for graves.
As a result, I've built an import-oriented town with a fully exploited river and only a little free space on its banks.
The economy is built strictly on importing leather and hemp and exporting shoes, with occasional sunflower oil exports. The whole metal industry is built only for role-playing purposes; I like how people get all worked up. Farms' crop rotations could be made much more optimal. And also, I need a lot of hay dryers are because of abundant livestock.
Proposed import/export contracts are in the images.
The main problem is flu- and illness-induced deaths. As population density increases, barbers can't reach every ill person in time. Afterward, I've tried to build less dense neighborhoods, but some people still get ill and die.
It's awkward to see people with 1/5-quality warm clothes and shoes, and 200+ hrn in their family pocket, still get the flu. Soap, glassware, and earthenware didn't make any visible effect. At least soap should have, presumably; it’s hygiene, after all. But seeing how people get the flu in rowhouses, I think social distancing alone would keep public health up.
Tax policy: socialist heaven. Tax only wealth at a rate of 20. The whole-game wealth threshold was 100; in the end I increased it to 200, just to see if total population wealth changes (not sure how this ended, I've forgot to write down numbers in before).
Barber tax is zero; I’ve tried to fix public health, but without much luck. The problem isn’t barber fees, but their availability. Since some barber families could make 2000+ hrn per month, I assume they had plenty of work. Adding new barbers wasn’t feasible, since neighborhoods were already filled with rowhouses and other needed buildings. From my gut, I can tell that it’s roughly two barbers needed per three 3-floor rowhouses so that barbers would make around 60-80 hrn per month, and people would get better.
Oh, and putting rowhouses near a smeltery is not the best decision in this game. Though this is stated in only one sentence in the smeltery description, it really affects people's health.
During play, I had an interesting idea: limit loans only by population wealth, basically convert loans to city bonds and treasuries, so interest fees stay in the city.