So many people seem dissatisfied with their governments. Would it be better if, if you felt, for example, Anarcho-Communism, Primativism, or Fascism made more sense, there was a place you could move to and live under that sort of government? And those who like the current state of most of the developed world would have a place too?
The main structural problem I can see with this is imperialism, population, and immigration.
I don't think so. Elections are essentially a substitute for war. A formalized bloodless coup. If you divvy up a large country into ideological safe spaces, you would get an actual war within a few decades.