OnTheWayOut - "Sometime in the future, when the G.B. see it is time, they will close the gates or flee to an Island with suitcases of cash and say the Great Tribulation has started..."
I've considered this possibility myself, and I actually don't have much of a problem with it.
I have a hard time imagining the WT machine being able to operate effectively without their direct presence and influence... their "celebrity status" amongst the rank-and-file is too significant a component for the Org to function without it.
I suspect that (besides the constant ego-boost) plastering their names and faces all over everything the Org cranks out has actually become a practical and necessary component in the current media-driven age.