I agree that next 20 years will see major changes within wts.
Anyone with a brain will start to question the end being soon as they watch 2014 come and go, 2020 come and go as they're getting older.....
GB isn't as charismatic as Franz, Russell or Rutherford. New theology just gets dumber while the uneducated JWs have harder time making ends meet.
Technology already brought information closer to home than GB would like, we just need some laws that restrict unlimited recruitment going on, something along the lines of Australia would be a wonderful welcome everywhere. Get recruiters to get background checks everywhere and this will cause major problems for wts especially in developed countries.
Positions of dead GB members are still vacant and aren't being replaced, maybe there is a fear of new one(s) making changes that the present leaders wouldn't know how to handle. Maybe there is growing mistrust within the top leadership.
I only hope that within my lifetime I see GB members and their legal team thrown in prison for a long long time - chair would be fine by me as well.