I think Hillary - and the rest of the Dems, for that matter - needs to expand the Bush/McCain linking to the Bush/CHENEY/McCain comparison.
First, Cheney is even less-liked than Bush. The worst President AND the worst Puppet Master Vice President.
Second, that'll bring Biden into the analogy - which Hillary especially needs to do as a way to distinguish her during-the-primary comments from her post-primary comments.