Here’s how we do it in the UK. https://www.theguardian.com/law/2018/oct/01/uk-supreme-court-appoints-two-new-judges-arden-kitchin Our Supreme Court has 12 justices. Two were appointed to replace retirees for the new term. I’ll wager 99.9% of UK people are unable to name any of them. The court is entirely separate from politics and the process of appointment is independent of government. Judges must retire at 70. It seems to work pretty well.