Just make primaries mandatory. Banning consecutive terms is not going to accomplish anything worthwhile. The good things it does are more than matched by the bad, plus it's a literal limit being placed on democratic choice.

Americans are still searching for simple answers in the form of rules. 'If only we had this rule, then Trump wouldn't have happened. '. Trump or someone like him was the inevitable result of festering sicknesses in American culture. There are no rules you can come up with that can protect you from that without addressing root causes.