What kind of judges will this "communist" appoint to the Supreme Court? If he/she is going to appoint from the exact same pool as Obama/Hillary, than him/her.
Well, there are no real communist judges that I know of - would it matter to you if this person preferred an unapologetic liberal like Goodwin Liu or a "consensus" choice like Sirvansian or Garland?
It wouldn't. The more you talk, the more I'm convinced that the "communist" is the obvious choice, because of checks and balances. He/she is strong on everything except civil liberties, and couldn't appoint anyone that wouldn't check he/she on civil liberties issues.
At best, he/she would appoint some of the names you described; at worst, they keep nominating crazy people who are never confirmed.