I would worry that penalising policy makers would lead to a curtailing of the power of the political system, and a corresponding transfer of power to private in

I would worry that penalising policy makers would lead to a curtailing of the power of the political system, and a corresponding transfer of power to private interests without popular oversight. I’d expect a system where people are forced into roles of political power and punished for failing to perform to degenerate into a bunch of corrupt policymakers doing what their rich patrons tell them to, in exchange for protection and wealth.