I don’t think Vline believe in maintenance cycles, instead advertising insertion of a couple of sleepers and a few spikes as an “upgrade”, to “improve safety”, etc.
Electronic Train Orders already seems to be going the way of ASW, which either had way too much money spent on it, or nowhere near enough.
Local drivers claim the Echuca line is about 20% concrete sleepers, but has many broken timber ones, and desperately needs at least one more good pass. At 40-50% concrete, you might look at improving speeds.
Existing train orders could be cheaply enhanced by a few CCTV cameras to monitor train complete; a few TPWS racks would improve safety for opposing moves (eg, Up Swan Hill train could get nearer one at Eaglehawk than Swan Hill). Or better still, use the axle counters on so many level crossings to install ATC!