Six year terms in the Senate “six years isolation from the people” was the original intent.
And wouldn’t election via State Legislature be further isolation from the people?
My point is the Framers did not envision two popularly elected Houses, for good reason. Our three term congressman aka senators reflect popular passions without the humbling experience of semiannual elections.
Isolation from the people when not elected by the people is what the Framers sought and achieved.