Democracies rarely go to war with each other. Add mutual economical dependency to that and you have a strong base to avoid armed conflict. The EU is a good example for that.
The nanny state and ridiculously high level of market protectionism bullshit under the guise of regulation that the EU throws around gets a bit too authoritarian for me to blanket accept as a Global system, where the big players will just run shit anyway (China, US, India) if the system created is a fair democracy based on population representation. Although it would be nice to have proper universal health care services, universal social welfare services, and open and free education services for everyone.
Or am I off base with this assessment and not knowing enough about the EU structure to understand how it could be effective on a global scale in the face of global scales of corruption?
It would take AI levels of control to avoid corruption, but the AI itself could and would be corrupted or just simply tricked at every opportunity.