I am thinking of a new model for a replacement for the UN, one that cuts out governments and lets the people directly participate. The people of each country would be represented if the government allowed its people to join and vote for representatives in this new body. This would mean ditching the unfair Security Council and encouraging democracy.
Proportional representation would keep the politicians from interfering with what the people really want, which is peace.
I can even see the possibility of setting up such an organization independently of the UN. If the people of the world were to form an organization outside of the existing framework, it could gain its own legitimacy by passing judgment on the issues on hand.
After all, what could be more legitmate than the judgment of all the free individuals in the world that care to express their opinions about an issue.