Not sure if an SG platform at Sunshine would get enough use to be worthwhile. Five trains per day in each direction. Airport passengers can take a bus from Broadmeadows. Granted there will be some passengers transferring to the Geelong/Ballarat/Bendigo/Sunbury lines, but will it really be enough to justify the cost?
For the umpteenth time I will again state why a standard gauge platform is essential at Sunshine for Albury & Wagga, Sydney passengers:
1. Albury line pax currently can change at Southern Cross for MTM trains to Dandenong, Pakenham & Cranbourne.
BUT once Metro tunnel opens in 2025 Dandenong, Pakenham & Cranbourne trains will be in Metro tunnel and no longer accessible to Albury & Interstate pax at Southern Cross. So Albury pax need to be able to change to Metro tunnel trains at Sunshine to access Dandenong, Pakenham and Cranbourne line trains.
2. Flow on side benefit from 2025 allows Albury pax to change for South Western, Western and Northern VLP trains at Sunshine saving 30 - 40 mins in going into Southern Cross only to come out again on a broad gauge train.
3. From Airport rail opening 2029 gives rail to rail connection at Sunshine to/from Melbourne Airport. Much better than a crappy suburban bus connection from Broadmeadows.
4. Why should Albury line travellers be offered a second rate service compared to the other Inter City routes ?
Re-instatement of the former standard gauge platform at Sunshine is low cost, easily done and essential if Sunshine station is to be the super hub Government keeps crowing about.