If either party doesn't pull its head out of its fourth point of contact, this is how it will continue, incumbents continuously being tossed out until someone the public learns.
Fixed that for you.
I can't come up with a better system of government than what we have now, with the possible exception of bureaucrat employment time limits and more stringent term limits for elected folks so as to encourage greater civic participation...
But the next evolution to make our government better is for the public to acknowledge that BOTH parties are inherently statist, just wanting to tax and inflict force in different directions. Giving a 3rd party a 25-40 percent stake in the Congress will force the statists to build concensus rather than dictating with 51%.
Either that, or well armed sheep need to contest the vote of the wolves.