Any form of government change can only happen in dangerous times. I once said to someone frustrated at the bureaucracy of getting ones drivers license renewed on your birthday, that when large groups of people have a similar problem at the same time you get things like revolutions. See the Arab spring. Truth is I've seen in my life that oligarchies are the natural state of human governance. No matter what form a state is founded on in the fullness of time it will tend toward oligarchy. Our modern representative democracies just make that slide easier. Another thing I've seen is that while the life of a man is linear, the live of civilization is cyclical. And perhaps right now were in a place of complacent bred tyranny of the political class. And that it could change if things get really bad.
When dealing with the philosophical constructs of men, the more cynical (or more properly realistic) you are the better.
I've read Starship troopers that sort of system would end up with the same sort of oligarchy. Just with the uncivic minded de-jure left out, as opposed to de-facto left out as we have now. This sort of system you suggest is exactly what Heinlein lays out in that novel, who was an english lit. educated ex-military man approaching middle age when he wrote it, coincidence? Where the voting franchise is only open to those who do a term of federal service. After reading it I couldn't see how this would make better voters. As those willing to do the service requirement would have been the ones who voted under our systems now.
I might have been a little unclear. I think the Athenian system of de-electing an archon is something that might be better able to keep officials on their toes. But Athenians did that every year. And in the modern state is too big for that sort of annual expenditure, although digital technology might make it more feasible. I also think a major problem with our modern democracies is that all our political class operators are as short sighted and self serving because they have to face the voters so frequently. They have 48 months to get all the gravy they can. If they, or their peers, don't mess up too badly they could get another 48 months. That kind of desperate insecurity is a great place for someone who is a little flexible already to go full Corleone. So if you want less corruption and term limits, terms would have to be increased. To 5 years at least, 6-8 ideally.
And 90% of people are not willing to do more than that. I'm not.
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