You're right about being in the dark alright! This post makes me think of so many others here based entirely on conjecture, the same thing we all saw when we were in among the Witness R&F and elders!
So who "at the top" is involved? In one sense the GB is like any other elder body. They undoubtedly have their differences in closed meeting sessions, but must present a unified front outside their meetings, as many of us have witnessed and even participated in while we were in our local congos. But you would have to delineate just who is who on the GB, who the liberals and hard liners are, who the weak pushovers and who the alpha dogs are. Do you have some insight here?
Clearly Tony Morris and David Splane are the top dogs. But where do the others fit in? I have heard that Jackson is somewhat liberal and Sanderson too, but I don't know if that's substantial. Herd seems rather a beta than an alpha type. Lett, well, who knows? A loose canon, but probably harmless and easily controlled by the alphas. Lösch, I dunno... maybe the wannabe as someone here said once...
So where here is the power struggle? If you postulate a power grab by those below the GB, as some here really really want to believe, then you have some serious issues with their forced acceptance of the GB's power and the fact that if they are ever found out, they can easily be axed, especially in the current climate of Bethel dismissals. Hmm...
Finally, as you yourself recognize, any appearance of disunity at the top would be devastating to the R&F. As daft as the GB are most of the time, they are bright enough to recognize that fact as well, and they would likely do whatever they need to do to avoid such a perception by the R&F.