From a financial perspective to go mainstream would make sense. Cut out Jehovah, Armageddon, field service and shunning and make it a Bible club. The GB would have to contritely admit their instigation and complicity in all the blood related deaths and the suicides from personal conflicts with their dogma, and their doctrinal error and false prophecy and the fundamental mistake in believing the Roman Catholic selection of Bible books and the elevation of these texts to become inerrant divine words. The Gb would lastly and publicly have to humbly admit they were never inspired by God or used as his exclusive agency.
Not much to ask! ...but it would take the nastiness out of the cult.