I'm not even looking at this in terms of Bush's legacy as much as I am looking at this as the dawn of a new world... Hopefully.
I like my heros to leave a lasting legacy too.
Great men don't worry about their legacy.
George W. Bush' legacy is already monumental and growing every day. His place in history an not only one of our greatest presidents, but one of the most significant leaders in human history, is already well assured. However, fast or slowly events move from here on out, they will move inexorably.
I agree the expanding Liberties of the world are of primary importance, but Bush's Legacy is important too for one reason. To serve as reminder to the failed ideas of the opposition, and the eternal truths in Bush's message.
We shouldn't have to fight these same battles every generation. Many of these arguments were fought with Reagan and before Reagan. Changing party lines. Than people stopped speaking of it and people forgot. Now we are having to fight the same ideological battles again. It would save time if we never allow the lessons learned to be spun or lost from neglect.
This is why it's important to protect his legacy jealousy so that 20 years from now time is not wasted under pressure of a new threat to convince people of these simple truths.