They are already consolidating congregations and selling KHs. Circuit overseers (costing $$$$) will be reduced as the number of circuits is also reduced.
Mid week meeting will likely be online and a lot of JWs will thank Jay for such fine thoughtful blessing
D2D preaching will remain but as someone posted a few years back that the monthly ministry report will be abandoned. That means less pressure to preach and there will be no shame of reporting 1 or 2 hours per month. Another blessing from Jehovah. This is likely a possibility since they have reduced the magazines to only 3 per year. How are you going to preach(make your hours) without magazines?
Pioneering will continue but the hours are between you are Jah. This is already happening with pioneers told to abandon their monthly hourly requirement because of the pandemic.
More people will be kicked out of bethel and translation offices as they move from paper to video. There is also a good chance that public WT will be abandoned.
DFing will stay.