I believe that's the next change is to drop the CO or at least restructure. You could have a Circuit Body of Elders made up of say 10-12 elders in the circuit. That body could organize the CAs, choose speakers, send a rep out to each congo twice a year for a midweek/Sunday meeting, deliver the WTS outline and meeting with the local elders and FS on Sat. That Circuit BOE would report directly to the Branch just like the COs do now. They would sign off on any appointments/deletions in a fashion similar to what the CO does now. Plus, ZERO expenses because they aren't in full time service so require no WTS or circuit support.
This would be a super easy thing to implement and I'm convinced the elimination of the DO was step 1. You could even have the outline for the servant meeting delivered via video if they wanted to.