I think you can forget about meeting in private homes nowadays for many of the reasons outlined above .
What I believe could happen is that they will become strictly a television based religion where you tune in 3 times a week .
One where JW`s would have to subscribe too so big brother can keep tabs on you, and of course a fee would apply to join up and then an ongoing fee to keep you listed in good standing.
Maybe one Assembly hall in each major city so that the numbers look good.Donations to be done by credit or debit cards on line.