Feudal-Kingdoms

I greet everyone, I would like to share my idea, I would certainly welcome if something like the creation of their own kingdom was added to the Minecraft and the villagers acted as citizens, and there would be more kingdoms in the world with which to cooperate or wage wars, of course creating a kingdom was not easy and it would be necessary to work hard. Of course I understand that this is an unrealistic idea as it would be difficult to code, but be sure to take my idea to heart because we will not lie, most players are building their world in a medieval style or they would not like things from the modern world to be added to Minecraft. thank you and sorry for english.