So here's the thing, you don't need to "figure out" what's a good governance model - we already know.
We've had like 100,000 years of varying levels of civilization, every single one of these "pop ideologies" (anarchism, communism, etc) has been tried over and over and over again, because they're simple enough that in 100,000 years, it's basically impossible that they haven't.
What we've ended up with is: monarchies, oligarchies, and republics, those are the only forms that have survived.
Now all of these have problems, which a lot of people spend a lot of time talking about. But the solution to those problems is pretty certain to be incremental improvement. Fortunately, we have examples of countries that are better at this than average - e.g. Switzerland, Japan, and Singapore.
So you don't even need to have a unique idea here, just say "How can we be more Swiss?" and you're already smarter than about 99.9% of everyone who expresses a political opinion.