I personally think a Hillary/McCain map in 2008 would have looked something like this:
So, that'd be outperforming him by 3 electoral votes, and I also think a Hillary win in 2008 would have been MUCH better for Southern and Appalachian Democrats at the Congressional and local levels. However, I don't think she could have pulled off a 2012 win in similar style as Obama in the same environment (2012 was won by Obama PURELY due to how badly Republicans screwed themselves over with the EC, GIVEN the Obama coalition turning out).