The Village, the most basic form of living in the Hearthlands, apart from all on your lonesome. But currently that is all there is. I will go a little bit in depth of not only how cities, but entire empires could function on a basic level. Being in a city or empire would give you a boost to your quality of things such as metal working and other more civilized skills.
The City
A City would require a village idol, and would change the village from a small group of hand picked people to a little less forgivable society. The idol would be made into a statue made of stone and metal. A city would have public areas, made by placing Public Banners. This would allow anyone to go and interact with the resources at some level. You can't build there or destroy, but other than that your good. Essentially, these would allow people to get to the City Idol, where they can submit a request to join. It gives the lawspeaker a list o their traits and levels. They can accept or deny it. Cities are about living there, not just taking and giving resources like many villages. Once in a city, you have 5 weeks to put you hearth on City property. The Mayor of the city can build a City Hall, using 100 stone, 300 boards, and 100 blocks. It is twice the size of a cabin and has two floors.
The Empire
An empire would require 5 societies, 1 of which must be a city to be the capitol. To make an Empire you need to up your City Idol to an Empire Idol, made of 5 gold bars. A hefty price. To join an empire you must have the 4 law speakers and the soon to be king gather at the City Idol. They all place in a bar of gold, and the king then writes the name of the empire on it, like a runestone. The Empire is now made, and the king can build a throne, and a Castle using 1000 stone and 100 of any common metal, also a hefty price. It is 10 times the size of a cabin with 3 floors. In an empire you can use crossroads that lead to sister societies as if you were in all of the cities/villages. In other villages/cities in your empire, you can't build or destroy, but you can become a member of it even if you are already in a village/city, as long as it is in the same empire for full rights.
Thanks for reading, it isn't much, and most of the ideas need heavy rethinking, but its my 2¢.