It's been posted elsewhere by someone else but:
Getting rid of Circuit Overseers.
A local elder could be deputized to visit local congregations and trains to report the goings on to headquarters.
There is already a position called City Overseer. The City Overseer could extend his responsibilities to actually visit the local congregations under his jurisdiction.
This would wipe out an entire layer of middle management - a layer that could be fertile for apostasy.