More in reply to Pro than to your ass, SoM, but we do still have to deal with Amy's mantra, "Time can be rewritten." Throw in the previous TARDIS and the sky is the limit. Honestly, even if it was just the Time War being unlocked and the Time Lords' doomsday device being undone, I would really like to see just what the "Degradations of Skaro" and such really are. Whether or not that is that case remains to be seen. But, this season is setting up to be one hell of a ride.