So forget 15 justices. Let’s keep the nine we have who are appointed by the president, and add one from each state, to be appointed by governors, and then confirmed by the Senate. Fifty-nine justices is enough to ensure (I hope) that they aren’t all from Harvard and Yale as is the case now, and enough to limit the mystique of any particular justice. If the Supreme Court is going to function, as it does, like a super-legislature, it might as well be legislature-sized.
Making the Supreme Court less sensitive to shifts in the political winds would also benefit presidential and senatorial elections. Right now, they turn significantly on who will be appointed and confirmed to the Supreme Court. If that’s less of an issue, then voters can evaluate candidates on how they’re likely to do their own jobs, rather than who they’ll support for a different one.
Is a mega-Supreme Court an idea whose time has come? If so, we can thank those who put the issue on the table.