I think this is a huge risk for the leadership to take.
Donations will go down. People are anxious but in the midst of their anxiety, their brain will still record how nice it was to not maintain such a high level of spiritual activity.
If they use their TVs and screens they have installed in the Halls and try to stream info, some folks are going to want them to just move in that direction in the future anyhow. The Mormons already have been doing that for years with their General Assembly (similar to the district convention).
One problem is the Mormons impose a tithe and JWs rely on people using their donation boxed after they have hinted the whole meeting that you should.
So that part could be hard for them to work around.