I don't see a viable path forward for the WTS, because the way it operates has painted it into a corner.
They depend on the desperation of people who believe that the end is near, so many forms of long-term financial planning have been discouraged. They have frequently prided themselves on not forcing people to donate, so any type of subscription or transaction-based gates will turn off many of the die-hard members. They spent so long encouraging members to reject wealth and build spiritual treasures, that they can't turn around now and push them to find better jobs/careers. They constantly point to signs that the end is very close, and that just adds to the disillusionment of members, as nothing ever happens and momentous occasions fade into distant memory.
A bunch of old men who have no better option are likely to simply hold out as long as they can, figuring that it will be the next iteration of the GB that will need to deal with the fallout. Which means that they will hold the course and try to keep the house of cards from falling over too quickly. I don't know if it will take five years or fifty, but the crash will probably be spectacular.