> our particular system of government is a bit shit, and keeps getting worse the better everyone gets at gaming it.
I agree that a "Union of States," being profoundly anti-federalist, is a pretty shit way of running a homogeneous world power with a shared language, shared culture, and (for the most part) shared ideals.
The US fundamentally changed after the Civil War (which was probably the breaking point of anti-federalism) but unfortunately the Constitution didn't change along with it.