No, pressuring justices to retire before they themselves want to does nothing but undermine the judiciary's independence.
This sounds nice, but that ship seems to have sailed a long time ago. The judiciary is already (irreversibly, without some structural changes) a political battlefield. You can blame the conservatives for that — they're mostly responsible — but talking about judicial independence now feels like unilateral disarmament.
The Court has always been a political battlefield; the only difference is now that there's a major political party who cries that it isn't legitimately-constituted (mostly because said party believes they've forfeited the Senate, at least in the long-term), and it isn't the Republicans.