"Obama is a better president then Reagan ever was." In about ten years, that is going to be the consensus.
Sure thing.
That's actually very possible. Truman and (to a lesser extent) Eisenhower were remarkably unpopular when they left office, but are now usually considered to be in the top 5, or at least 10, Presidents. The Republicans got walloped in the 1986 midterm elections, likely performing worse than Democrats are likely to this year. I'm not as familiar with Reagan's popularity during his second term, but I promise you it's nothing like his popularity now. History often remembers presidents more fondly than the American public at the time, and while I don't think we can bank on that happening with Obama, we definitely can't count it out either. It's likely that Obama will be remembered in the history books as the first black President and the President who instituted a major health care overhaul (with the controversies and weedy details of that reform less emphasized).