I see Romney as a Gerald Ford sort of moderate Republican. The difference is that conservatives would have more leverage with Romney than they had with Ford. Even Ford was a lot better than Carter, Clinton, or Obama. If Obama gets a second term, he easily could be able to put a fifth leftist on the Supreme Court. Romney might be inclined to pick someone along the lines of Kennedy or O’Connor, but conservatives would be more vigilant than they were back when Bush-41 picked Souter.
Slick Willard would do just like Ford, put a leftist John Paul Stevens on SCOTUS.