I think we will see larger congregations. With the consolidation going on where they sell kingdom halls and incorporate the members into other congregations we can expect to see bigger congregations.
Also, I think they will start lightening the load of the elders at the meetings by having meeting parts video recorded. Maybe they will start it with the annual special talks. They'll have them pre-recorded by a GB member or one of the helpers, then have it shown at the kingdom hall.
Because of the shortage of brothers, they might also have convention parts/talks video-streamed to multiple convention sites simultaneously.
In short, expect to see more emphasis on the use of technology to impress the membership, keeping them focused on Watchower's modern, impressive packaging and distracted from the vacuous, illogical and downright erroneous message.
I think the Awake magazine's days are numbered. I think we will eventually see a single, 20-something page quarterly magazine instead of the 11 page monthly alternating Watchtower and Awake magazines.