I have to say, I wonder if they would welcome an exodus of the most hardcore JWs. If the idea is to appeal to a younger demographic that doesn't accept the old authoritarian ways, you can't help but make the long-time loyalists feel uncomfortable, if not outright unwelcome. Losing them would be a bumpy road, but what is left behind might be something to build on.
I admit, I tend to see this stuff through the lens of an old-timer and long-time devout JW (whose experience spans mostly the 80s-90s). If they plan to go mainstream, that is the type of person they won't be able to cater to. If they are taking the long view, they need to let go of the people who are waiting on an end that will happen any minute now and build a membership of people who just live the life. You can't try to appeal to both, because both will leave.