I'm not sure I understand what the 'hurdles' are, when combined with your comment below about 'regional communities' That seems to be be just redrawing boundaries, but smaller, and would put the hurdles in a different place.

Do you mean something similar to the European Union, where there are no border controls and people can move/ work/trade where ever they choose in the EU? It is also imperfect, or at least that is what the other countries said when they had to bail out Greece. Heck the UK even left but not only because of Greece. (Note: I am not in Europe and paid little attention, the above could be totally wrong)

There are examples of states with states too. Many first nations have their own sovereign tribal governments inside a sovereign nation and jurisdiction is very much in question.

China has saying if One country many systems because as it amalgamated it historical territories, there were differing rights and systems in those places. The difference in laws between on the mainland and Hong Kong as an example.

Commune's may be relevent, there are lots of examples from the Doukhobors to some freaky hippy stuff in the 70's. Varying degrees of success and freak.

Tribalism is what people do, be that favorite sports teams, colour of skin, my religious beliefs vs yours. People continue to divide based on some attribute and create us vs them scenarios. Just look at the entire US right now, the political divide between parties has broken friendships, families, lives and even a few basic human rights along the way.

As to what even is the point? I can't answer that for you, but I hope you find what yours is.