@jacobtlevy I would prefer 16 year terms staggered at 2 year intervals. Each President gets to appoint 2 of the 8 associate justices per presidential term. The Chief Justice should serve a 4 year term and be appointed in the first year of each presidency.
Further, I thinkg each Justice should be allowed to designate a successor from among the confirmed members of the Federal circuit courts who would 1) succed the justice if they are unable to complete their 16 year term, and 2) decide cases in which a justice recuses themselves.