The route to go is to separate the congregations from the corporation, but how do you do that while still maintaining the control Rutherford fought to gain?
Perhaps a more interesting question would be, is control still necessary?
What did Rutheford's control of congregations accomplish? 1.) It legitimized himself as the heir to Russell's Society against rival claimants. 2.) It mandated the door-to-door ministry, which was a money-making activity that enriched the Society and Rutherford vis-a-vis.
The Watchtower leadership no longer has to fight a civil war. They won the battle and enjoy an honored and elavated status in the eyes of the JW's who view them as Jehovah. Apart from brand identity and direction setting, the field service no longer a viable money-making endeavor. We see evidence of this in Society scale-backs and cost-cutting. Anecdotally you see this in JW's that won't even ask for donations at the door.
I like the idea suggested that leasing Kingdom Halls might be a good alternative to the preaching work. The Society already profits from loans and insurance sales, why not toss rent in there. Make 'Kingdom Hall' a brand, sold and run by indepedent franchise operators.
Just thinking out loud ...