I enjoy going on at length about decisions made by the court system, but when it comes to individuals on the bench, I am beyond clueless. I'll will leave that type of speculation to more considered others.
What I will say is that in the near future, opponents of the President will go looking for anything that can be used against the nominee. Some people are have already laid out battle plans, while more personally targeted opposition research is already underway. I certainly hope that some of them are joking.
For my part, I would ask for a litmus test. Not on Roe v. Wade (no relation), but on Kelo vs. NLDC. What a steaming pile that decision was. Too bad it was one of the good justices that we are needing to replace.