It really is quite fascinating when you look at the WT Org's history, particularly when the majority of the GB has had a turnover. Russell, then he died and when JFR took over there was a schism and the ones that continued to believe in Russell's teachings were labeled "apostates" while the one's that embraced JFR's changes were renamed Jehovah's Witnesses.
JFR hired a new prophet named Fred Franz to be his main writer and doctrine maker...this continued after JFR's death with Knorr also using Freddie. Under Freddie and Knorr they expanded the GB with hand picked individuals who for the most part followed Freddie's lead.
Finally after Knorr and then Freddie died this hand picked GB continued for a while holding the mantle but also making some changes then they eventually had to fill in replacements with their hand picked friends. Then they started dying off so these hand picked friends made more changes, and so and so forth until here we are today.
It seemed to me that many of the changes started with Ted Jaracz's death and continued until some of Ted's closest, hand picked GB members were out numbered then more changes happened. Might be a coincidence but seems like with the death of Guy Pierce in particular changes have be in overdrive.
It all remains to be seen what will happen when Losch, Splane, Herd die off and what their replacements will then do.