Scott, that is about the best quote I have read in a long time
Just a few predictions (very speculative of course, we are not even in 2013)
I am looking for Murray and Djokovic to split the Slams if they stay healthy, maybe an outside chance of someone else in the French Open (I don't think Nadal will win it if the rumors are true and he only comes back to competition in the beginning of clay court season).
Federer can win a Slam only if he faces Murray OR Djokovic on the way to the title, and not both. What happened at Wimbledon 2012 is highly unlikely in my opinion, especially now.
In case of injury to Murray, Djokovic could flirt with the GSlam.