I disagree that Hillary lost in '08 because of un-likability. As I recall, when Obama condescendingly told Hillary that she was "likable enough" this backfired on him. Hillary's personality and character has always been one of her strengths, if not her main strength.
I also disagree that Hillary can win a campaign solely on the basis of her likability. Of course, anything can happen, and candidates have won solely on likability before. But as I said in the other thread, where Hillary went wrong in 08 and could go wrong again is failing to articulate a political vision / emotionally resonant campaign theme. A campaign needs something inspirational around it, something that goes beyond just the candidate to how she's going to help the people. That's ultimately what politics is about, in the end.
I'd argue that it happened in the end, though. By the time of her exit, she was really embracing the feminist angle. But I guess it always happens in the end. Hell, the energy around Romney in the final week was absolutely incredible... "Real change on day one" should've been his message from the beginning. But I digress.