My concern relates directly to your’s as state. From the perspective of what vote on the problem very large, i.e. planetary regional states, the issues are too large, complex, and not necessarily relevant all regions of the state. Very large states either start out as empires or end up authoritarian because too few citizens can grasp the complexity. As a result an oligarchy rules for their own professional interests.
Concurrently residents have a vested interest in specific issues for their area. They can originate or concur on issues to be determined. And blockchain works by making this transparent at least potentially.
The benefit of large areas is the maintenance of shared rights, standards, and broader international trade issues that require administrative support. The EU was a good working model and could be expanded with greater administrative control in direct democracy with a separate administrative branch. The latter is becoming more AI/ML based that could remove much of the arbitrariness of political and bureaucratic corruption. The specific human to administrative interface would be handled by individual city states and surrounding areas by direct initiative.
I’m really trying to work through this publicly to see what can evolve.