So:
Peuce is of the opinion that C and E cost the same to operate and C is safer.
Capt Bloggs is of the opinion that C is a problem as it will cost more than E, i.e. will cost more than E where there are great numbers of VFR movements, due to an increased workload for they controller, requiring more controllers and C is safer.
So the problem really lies in the actual facts regarding actual operating costs between C and E in a high volume VFR area/aerodrome ( which Broome for example is ), would C and E still cost about the same to operate when there is a great amount of VFR traffic ?.
I am not a controller, and am speaking from relative ignorance, I can not imagine C in a high VFR movement area costing the same to operate as E in a high VFR movement area.