Dunno what DS has to say regarding your question SBF but my gut feel is that book production will reduce down to the minimum they feel is required to facilitate the public preaching work. They will continue to have a greater need for physical media in parts of the world than others so I don't see a completely digital publishing business any time soon.
They have already made big steps in centralising printing and production in key hubs. I suspect they are keeping tabs on literature requests and have a threshold in mind where they stop shipments of all but essential physical media to congregations to be used only for preaching and insist that individuals use digital instead for everything else and "print at home" if they want a physical copy.
We may see the evolution of digital carts over time as well where there are no publications.
I also expect even more use of video. I can see the presentation of more of the meetings in the form of complete talks on video. They might increase the number of global broadcasts, move CA talks to pre-prepared videos or split the public talk into a video segment top and tailed by a local brother. CO visits will likely have more video presentations, especially for the pioneers and MS/elder meetings.
Overall I see the use of video as a way of ensuring a consistent message that has all the right hooks for propaganda and indoctrination neatly incorporated. It also paves the way for enabling RCs to be distributed to the assembly halls since the overhead of running the event would be reduced.
As for branch personnel it's all about downsizing as we know but they have hit upon a great method for keeping up the manpower requirements they do have. They are increasing the number of commuters and remote workers. These have the advantage that many of them are not officially Bethelites. They are ones who are substituting pioneering for service to the organisation in other ways. They work part time and pay their own expenses. It's an absolute winner for the org.