Whether or not they just do memoirs of the period, or full autobiographies, I think GWB, Dick Cheney, and Don Rumsfeld owe it to history to write something about the 9/11 period and its aftermath. I would include Colin Powell, but he's already done a book. I would also like to see a book from John Ashcroft. The other principal at the time was George Tenet, but I don't trust him to tell the truth.
I was disappointed in Ari Fleisher's book, because he focused on his relationship with the WH press corps. With all due respect to Ari, there were far more important things going on during his time in the WH than his daily exchanges with the press corps.
Ultimately, I think Condoleeza Rice should and will write an autobiography. It's too soon now, the most compelling part of her history may be yet to be written! (I hope, I hope, I hope).
Dr. Rice was not at the center of 9/11 though. Dick Cheney's position on that incredible and awful day is unique. As you say, he needs to write at the least a very detailed memoir of that day in the White House, and perhaps the few days immediately following.
He's a modest man, but he was at the center of the world on that day and performed magnificently. As you say, the world deserves to know exactly what went through his mind, what he did and what he thought about it on reflection.