SRL will help people trying to get to/from Uni and to hospitals. Eg Living in Glen Waverley going to Monash med centre or Box Hill Hospital.Personally, I dont see SRL helping much, if at all. Unless you are going to the airport, then who otherwise is travelling between Cheltenham to Box Hill and places like Burwood and Reservoir etc ?
When I was younger, I used to have to commute from the Broady area, to Monash in Clayton. 2 hrs each way. Admittedly I was a rarity, but that was partially because it was so hard to get to anything other than Melbourne or Latrobe.
There's folks who today come in from the suburbs, into the centre, who then train it back out to work. SRL will help that. SRL will help those folks.
Regardless of SRL, there's still only so many trains you can bring to any station in the CBD. We need to change the way we work so not everyone has to go into the middle.