Indeed he will, and maybe he'll appoint some Sandra Day O'Connor like Reagan did.
Your argument about who gets to be POTUS is a mixed bag at best, too many variables.
Cruz was a law clerk for William Rehnquist one of the two Justices who dissented on Roe v Wade. He isn’t likely to make a mistake in nominating Justices. The suggestion that he would is absurd.
Clinton and Obama were lawyers. The Justices they chose vote the way they were expected to vote.
Who would Trump appoint? I have no idea and I bet he doesn’t either.