I am sure that the GB does not care about the R&F JW. It does not care about the organization collapsing overnight.
Why do I say this?
In 2013 the organization declared that the "Faithful and Discreet Slave" consisted only of the seven member of the GB. This was declared as new light.
We all know from Watchtower Doctrine that all the theocratic material possessions on earth are there to be administered by the Faithful and Discreet Slave, now consisting of just seven men.
After taking over all property and extra cash from all congregations on the whole planet, which amounts to at the very least US$ 50 billion, they are in a great position if every one leaves, they can just share the cash between themselves.
But so long as more cash is coming in than going out, they will continue to try and coerce even more money from the members. This should increase over the coming years, maybe they introduce tithing.
All in all they do not care. When I watch the videos on JW Broadcasting, I do not see one single bit of sincerity, when one of the GB members speaks.