This map of Scenic Rail Melbourne shows a closely spaced network, with stops typically within 500m. The network comprises 1,745km of two-way 10m high guide-rail on poles, but otherwise with the same functions as for the previous map.
QGIS with Open Street Map, JC July 2020
This finer network would be more convenient, and may even be profitable with more optimistic estimates, but is unlikely to provide much cross-subsidy for a basic rural network. But walking or riding for the last 500m still requires protection from the elements and bikes, electric scooters and wheelchairs will still be required, so the 2km proximity is recommended.
The basic rural network follows.