Even if the organisation can not be sued for changes in doctrine and policies, they will never change the doctrine and policies that NEED changing.
Blood
Disfellowshipping
1914
All 3 of those need revising to make this religion more palatable for new prospects. On top of that younger people are less likely to join or stick around due to the hard stance on LGBT, which is another thing that will not change.
But, you make a major change on any of those and you’ve got more than a leaky ship.
The GB are in between a rock and a hard place. Their average age is 72/73 so my guess is they will continue to patch up the leaks, and leave the mess to the next generation of GB to clean up.