Hillary's biggest problem is how to deal with Obama, how much she should be different from Obama.

This showed in TPP, and showed last night when trump kept asking "then should we blame obama?". And I predict it will keep happening in the future debate.

Hillary must walk on a tight rope.

She has to be a bit loyal to Obama, of course.

Ye on the other hand she couldn't say too good about obama's achievements, that will antagonize lots of undecided voters.

Majority of Americans, no matter who they vote for, are not happy with status quo. They don't believe economy that good, american's dominance in the world, or think optimistically about social mobility, income or racial equality, how to deal with terror or illegals. ( not that I agree with such pessimism, Americans are too spoiled, they simply have to go abroad a bit more to see what is a real third world nation like. )

Hillary has to be like "I am both for and anti Obama", that is going to be problematic.