IMHO, only a fool would give up an appointment to SCOTUS. Lifetime job with minimal responsibilities, and the chances for removal slim at best...
I'd take that job, if she wants to vacate for me.
What Chris said. It's a guaranteed paycheck, that is nearly impossible to be fired from. Usually, you're retiring if you leave the SCOTUS bench. Power wise, they're just slightly less powerful than the POTUS in many ways. Sure, it's not pro-active. But they are the ultimate authority in the US. They can overrule both the President and Congress, invent law on a whim, deny any law or the Constitution on a whim and pontificate at their leisure.
Not a bad gig. Course, most Justices are aware that they're above virtually everything. And that if they flouted their power too much, it'd not go well. They command no bodies with rifles, and they're not given legitimacy through direct votes. I'm not saying this is bad, just a very powerful and unaccountable position, BUT it is hobbled with little force projection to back up their edicts.
"The Chief Justice! How many divisions has he got?"