Ethics may just be too “fuzzy” for the SCOTUS to grasp. It sure seems that way.
They might grasp this:
A strict individual term limit applied upon confirmation with a senate simple majority no confidence and removal vote clause built in could work to keep them better bounded. All current justices to be reconfirmed upon initial adoption. It may take a constitutional amendment to make it happen I would think.
Just a thought… Maybe someone else will have a much better and constructive idea which would be welcome.