“Downgrading” (to use your word) Class C to Class E will improve safety because it will allow the Class D controller below to concentrate where the collision risk is greatest.
It's like your mind is set in concrete, Dick. Why can't you open your mind and listen to the advice of experts? Your argument (above) is that the tower controller cannot manage the volume of airspace assigned to him/her. I am unaware of ANY evidence to suggest that is the case. At Albury, or anywhere else you mention. It is a
completely fallacious argument. The US don't have the tower controller controlling large bits of sky
because their airports are much busier than Australia's. It is pretty much universal in ATC that the volumes of airspace are so assigned in a way that allows the controller to be busy without being overloaded. Anything else is either inefficient or unsafe. It just so happens that in oz, due to traffic levels being far lower than the US, each controller has a bigger volume of airspace (such as a D tower plus some C airspace).
Why you continually push for a retrograde, dirt-road airspace system, instead of embracing the future, is beyond me. Your change resistance is hampering your thinking. Certainly, your plan would be far less efficient and cost many pilot jobs as the industry is burdened with more unnecessary costs.