I heard that during the last CO visit, he "encouraged" more young men to "step up to the plate" as far as congregation responsibilities. He noted that out of the 8 elders on the elder body, only one is under 50 (he's in his 40s). From what I know about my former cong., the prospects for new, young elders is pretty slim.
As mentioned above, the first problem they have is only 1/3 of all JW kids stay.
On top of that, we're talking about male roles in the cong. (e.g., MS, elder). So cut that 1/3 into 1/6 or less.
Then say that half of that 1/6 never went to school and have low-paying jobs and families to support. Just from a time perspective, even if these were spiritual giants, serving in the congregation is a huge sacrifice, if not impossible from a time perspective.
Then consider the 1/12 who are left who maybe got a little schooling, have a pretty decent job, etc. They all know that becoming an elder not only entails giving up your personal time, but puts you and your entire family in the congregation "spotlight of judgement." So it's not just a matter of you deciding to become an elder -- your whole family is now "Brother So-and-so's family -- and he's an elder!"
I think the upshot here is that the Society -- with their endless rules and requirements (including no women in congregation "roles"); their culture of surveillance and judgement; and their endless assault on education -- have set themselves up to ultimately fail. They are literally going to die out.
'Not with a bang, but a whimper.'