" technically one born in 1992 would overlap with Franz at 99 years of age. This one could still become a GB at a future time and still qualify to be of "one overlap"
Exactly.. So IMO, the current priority is to try to pump the water out of the sinking ship. Hence the nu-light about the FDS, and the upcoming articles basically authorizing the Elders to invade your life, [ not that they really needed it ] and the need to obey without question. Then we have the upcoming fear mongering from the Ministry of Truth/GB/FDS. Any who speak out against the WTBTS could be false apostles, a very ingenius term that allows for the same level of shunning, but lacks the outright hate-speech of the apostate label.
So if the WTBTS can survive for another decade or two, they can then move on to more doctrinal changes. I imagine there is a direct proportional relationship between nu-light and control/survival needs. They can continue to squelch partakers for now, until they survive this current crisis. They have already admitted that they shelve ideas until the GB come to a unanimous decision via " Holy Spirit." So they can eliminate all the new Ray Franz- like conscious class under the guise of apostasy or false apostles for now, while instilling fear in those who still "need" them as gurus. They can slow their demise until it's Jehovah's time to reveal that there are in fact more worthy partakers [ those drawn to Warwick via Holy Spirit?], or the 144,000 is symbolic, or it has "evidently" been filled much slower than previously understood.
All they need to do is survive long enough to buy some time to further evolve. As it stands now, newer partakers are eyed with suspicion. Why? The END was so close and the generation meant something else. 90 years=partaker and 50 and under=possible mental instability. With the partakers increasing instead of decreasing as prophesied, the nu-light of the GB/FDS had to be revealed or the sheeple would eventually decide for themselves what they thought about this developement. So the GB stepped in and did the thinking for them, with the added bonus of casting suspicion on any younger partakers NOT directly involved with HQ. Pretty cool, right? Combine that with the paranoia, which includes apostates, Satan's media, the older JW's staring death in the face [ including the secret fears of the aging GB themselves], and the enemies within [ your own family perhaps?!] currently raging through the ORG, and you have a incredible force-field protecting the Corporation.