You have to admit that Obama brought a freshness in the US and global politics that no one else has.. I might be wrong but Hilary seems more that your typical politician stereotype so even though she will definitely be better than Trump I doubt that she will bring any significant change for the country
If she does, I imagine that the Bernie campaign pulling her to the left will play a large part in that. That's a good thing though. A good politician should be responsive to the people. I mean, hell, Nixon was a crook, but even still he gave us Title IX and the EPA. There are a lot of policy disagreements I have with Hillary, but even at my most critical I have never believed that she was iredeemably evil.