The proposal more often floated around is an 18-year term limit (see https://papers.ssrn.com/sol3/papers.cfm?abstract_id=701121 https://papers.ssrn.com/sol3/pap

The proposal more often floated around is an 18-year term limit (see https://papers.ssrn.com/sol3/papers.cfm?abstract_id=701121 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=701121 ), which would give each president 2 appointments. The big difficult, however, is how to make sure that a hostile senate wouldn't just block all nominations (which is the new norm). Some people like Calabresi have suggested that the president and everyone in the senate would be denied all compensation (IIRC even from private parties) until the seat is filled. I don't think that's a workable idea though.