The religion is changing.
Some will wake up as a result, some always do and many of us are here as a result.
But most will stay safely ensconsed in their spiritual paradise, surrounded by their similarly atrophied conditional friends and family.
However, as to whether these changes, whether doctrinally or technologically, will bring in new converts, I highly doubt it. Is any Abrahamic religion other than Islam growing in the West, where surely the GB wants to see growth (the West is where the cash is)? It doesn't seem so.
I think the WTBTS will happily plateau for the forseeable future. After all, it takes considerably less effort and resource to keep a customer than it does to gain a new customers. The GB will be content to see incremental growth from within; the born-ins. Keep the families already in the cult happily sated on Spirituality Lite, giving the parents as many tools as possible to guilt-trip their kids into becoming the next generation of suit-wearing, bag-toting faithful adherents.
And when the down-turn in membership inevitably happens, it won't bother them; the love of the greater number is due to cool off, after all.
The GB doesn't want a big religious following. Too hard to control. A satisfied and loyal/faithful core is the end-game. And everything is set up to make that happen.