I forsee a SAFECOM entity which combines all existing administration functions (including OH&S, publicity, training, capital expenditure, SACAD, etc) with small operational functions which deal with the incident response.
I believe other emergency volunteer organisations could be part of SAFECOM (like Sea Rescue, Volunteer Coast Guard, etc are now via the Volunteer Marine Rescue).
I am not sure if they will be able to combine the three existing operational functions into the one entity. But this I believe will all depend on how volunteers accept the changes over the next few years.
Look at the current model in Western Australia and Queensland.