There is no information available to pilots about aerodromes that cannot be made available to ATC sectors.
In terms of the AWIS, I believe that 99% of AWIS in Australia send real-time data to their associated met offices so that Area forecasts, TAFs, and METARS can be generated. This would indicate that there is a digital stream of information that Airservices could tap into and display to the "SFIS' control positions. Airservices did this for their experimental Class E approach services at Rockhampton and Mackay.
Hence the only reasons why the AWIS for MNG and BNA is not being provided to ATC is either cost or dogma. The so-called preferred runway nomination could just follow the wind direction and speed, it is after all, just preferred. The real missing link is that no runway "oversight" can be provided, something that the CA/GRS does do. And are not the final approaches, runway surface, and departure tracks the most critical areas of conflict?
We can argue definitions all we like. What it boils down to is whether this service will make the MNG and BNA airspace safer places for jet transport operations. In my opinion no - if CASA "approves" or rubber-stamps this change they will not have mitigated a single risk that exists and the travelling public will be none the wiser. Come on Australia - it does not take a lot of effort or money to become a first-world aviation nation!