The guess work on the board is the same we did in private in the 90's.
My conclusion is that jw.org will do their strategy making for their own purpose to survive on long term.
Professor Richard Singelenberg, Utrecht University, wrote a long time ago that jw.org would transform to an "accepted" religious movement. Many changes in the years ahead gave proof to that.
So, people come and go, the society will survive like they did the 100+ years ahead.
G.