Minecraft wiki entry for Building_a_metropolis, associated text: Order 669
This system is partly TPK style but with a few major tweaks.
There is one leader, the administrator/server owner, but they can appoint other players as operators to rule beneath them and to be his or her army captains.
Villagers represent the common people and players rule them as the elite class.
Primary commerce is trading, encouraged with villagers or other players, but other commerce is done via a hub usually at coordinates (0,0). Command blocks are there for obtaining items that are NOT obtainable from trading with villagers. The players obtain the items via /give. Each item has a given price and players must pay that price in order to leave the hub.
Hostile mobs, especially illagers, represent the public's common enemy. The goal of the players, besides ruling the villagers, is to kill any hostile mobs that they find. Iron golems are the players' bodyguards and wolves represent the army.
The leader of the players can tax the villagers (i.e., can have a command block with /give to give themself emeralds every so often as if they were coming from the villagers).
There are minimal laws, such as no murdering and no hacking. You may grief or troll, but only with permission from an operator. Upon breaking a law, players are either executed (i.e. teleported into a pit of lava) or imprisoned (i.e. teleported to a jail cell after their inventory is cleared).
Mines and mob farms are allowed only with a license (i.e. a name tag named License) and players will be using their own materials, unless otherwise specified. Crop farms are allowed without a license.
A player can petition the government to build them a generic house for a certain amount of money, or if they want a custom house, they must build it themselves.
Non-operator players are forbidden to program command blocks, but they can use already-programmed command blocks.
Emeralds are the primary currency, but lapis, redstone, quartz and diamonds are strongly recommended as convertible currency.