Interesting,
Here is the problem. The organization followed a pattern pretty much in line with what sociologists have observed in governments and large organizations for years. They began with a charismatic leader who was also imaginative and full of ideas (in the Soviet Union we see a parallel with Lenin). Next came an authoritative leader who concentrated and consolidated his power. He generally used others who were better educated to keep the masses enthralled with changes in the basic message (For the Soviet Union it was Stalin, a peasant who rose to power because of his ruthlessness and relied on others the way Rutherford ended up relying on Franz). Then leadership passes to one or two weaker men because the power grabber didn't trust anyone in positions of authority who might be strong enough to take his power away from him. Lastly power devolves onto a committee of individuals who are even weaker and spend most of their time fighting amongst each other with little real success. Because of said struggle the committee is further weakened because the rest will not abide potential competitors for power or powerful allies for their competitors. Thus, they become an ineffectual body with no imagination. Bureaucrats take over, wielding power to cross-purposes while the committee essentially stands still from its own gridlock. Eventually the organization or government implodes on itself due to the weak and unimaginative leadership
That, in a rough and short outline, is what Weber and other sociologists noticed throughout the years. I think we can confidently say that the Witnesses are in the later stages. A relative weak GB, made up largely of yes-men and weak leaders of the factions therein, is lacking in imagination and unable to break out of its inertia. They are relying on others, largely the Legal department where the only educated minds remain in the organization, to suggest how they should reorganize things and even what "new light" to come up with. Fear keeps them from contemplating really big changes, fear of legal problems, fear of losing the rank and file in massive numbers. But change they must since their own doctrines are becoming untenable. So the changes are small, and incremental while the GB holds their fingers up to see which way the wind is blowing.
The implosion is not inevitable though. Take China, for example, which has managed to stave off imploding by embracing a modified form of capitalism. They managed to hold things together by giving the masses an illusion of increased freedom and using the method of their enemies to build a strong economy (it must have been galling to them to allow it). The GB could stumble across a similar solution (perhaps going "mainstream" incrementally). We will just have to see.
Forscher