Most of us are familiar with how the elders really are.
They will do the smallest amount of work possible. Once the studies are disbanded it'll be like pulling teeth to get the newly titled CBSO to shepherd his little group.
Unless....the WTS makes the newly titled CBSO shepherd a separate family within his group each week. That would force the elders to shepherd and maintain control over the small groups. Of course, the elder wouldn't get a night off then. That would only last a short time before it sort of fades away.