Sunshine plan looks pretty reasonable.Hopefully using the current rail reservation, even if the tracks themselves are glorified scrap iron, will help keep costs down. I like the idea to turn Sunshine into a V/Line hub.
I don't see the need to make it a special or express route though. MEL is only about 20 km from the CBD, which any airport train would either pass through or terminate at. There are not actually many stops between Spencer St and Sunshine and even if they added some for the new section (which I'd approve of) it wouldn't massively add to the trip time. Fares should be consistent with the rest of the public transport network.
