Blondie, that's a very serious answer. It is also right on target.
For example, how many JWs who came in 10 to 15 years after 1975 really understand what happened. They have the "adjusted" version of WTS history in the publications and the "adjusted" memories of the ones who stayed despite the cognitive dissonance caused by 1975.
I came in during that time period you speak of. I never really heard about it, even though my mother was an expert. She told me the truth about 1975 after I was an elder, I couldn't believe she got reinstated and believed their crap. (Even as an elder with a few doubts, I thought that) I had to dig to see what really happened in 1975, using only WT pubs.
A mass exodus caused by Bethel layoffs, UN scandal, news on pediphiles, or whatever- the core will adjust and start recruiting more. I do think that numbers will be harder to get up with Bible Students googling "Watchtower" or "Jehovah's Witnesses."