I think one of the only ways this works is if it’s a random pull of candidates (relative to their current field), and relatively short office terms. If you want a system reflective of the general population, I think it’s reasonable to assume you can’t pick them based on any particular traits outside of occupation. Payment would also have to be the same for all positions, regardless of importance.

At the very least, it would end the question once and for all if the “average” person has good intentions.

If this system routinely diverges a society into savage chaos, well, that’s sort of reflective of what the average of society thinks they need in the world and we have our sad truth. No idea where we would go from there to improve things.

But I’m an optimist. I think we’d find the “average” person would make very selfless choices because there’d be no incentive to try anything to remain in office or gain votes or gain power. In a year or so, you’ll just right back to your day job, so you might as well try to improve the life you’re about to be put back into.