Problem with term limits is that it puts the power in the hands of un-elected bureaucrats, congressional staffers and judges.
What we really need is to vastly reduce the power of central government so that the Money loses interest in manipulating it.
Also the Several States should take ownership their Congresscritter and Senators, paying them, providing their staff and housing, and expenses. As things stand Congresscritters are and Senators are employees of the Federal Government which is a conflict of interest if ever there was one.
I really like your idea about the Several States.