here's an idea: how about declaring a world government that anyone can join as citizen, but it starts as a planning game. that is, its rules initially only apply within the game but do come into real world effect in 2036.

that is, we adapt and simulate our world government until Realization Day.

in fact, you can only participate if you agree to this rule and swear an oath to bring about Realization Day, whatever it may look like.