Most of the political systems in most of the countries are currupted. Government collect Taxes but in return we get very less advantages. There is a doubt about the knowledge of ministers too.
If we can introduce a common governing system for the world without politicians I think it will be more friendly to the people. Government can be handled by group of people like this. That means same as what we do here in crypto. So there may be varities of ideas. Group of moderaters can pick the best ideas and apply them to the system. It will cut off the additional cost of maintaining ministers and will be more human friendly and real time updated.
Well, Ancient Greece used to have a system where ordinary people were allowed to vote and speak their mind. At the end of each term the people's council (elected by people themselves ) had the right to judge the ruler ( if the guy had made a mess of his job, he would be executed :-) I guess, this added to justice in the political system of the first democracy in Europe. Imagine that today's presidents would have to do the same - they would then take their duties with much more rsponsibility). As for the decientralized system governed by one government, I don't see it possible. Sounds more like a dystopy - agreeing here with the similar comments. Unfortunately, this world is corrupt and evil cannot be eliminated. One can't create a government that will be purely altruistic and take care of its people. Don't think it's possible. All attemptsto achieve that have resulted into bloody revolutions, communism being the brightest example.