These so called "democratic borders" will lead to migration wars. Governments will strategically send their citizens to live in a certain area until they outnumber the locals and then have the locals declare that land belongs to the other country. Obviously that is already happening, but it's not legal. Once you make it legal it would be pandemonium. You would have to lock down migration completely. That would be far worse than what we have. For example in the US the majority of people want to limit the inflow of illegal migrants from Mexico. The current illegitimate government however, is flooding the country with them by declaring defacto amnesty and promising citizenship.

I would like to see the states have a right to suceed but I think they would ultimately just be systematically destroyed the same way.

And the logistics of such a system are far too complicated.