I'm talking about converting existing lines to metro (e.g. T4). If you take a whole line like that with an abundance of curved platforms, do you:They won't be needed anywhere on the metro system apart from the Bankstown line because it is being designed with modern straight platforms.
a) run automated trains and have PSDs with platform-gap fillers as will happen on the Bankstown line,
b) run automated trains but without PSDs like in Vancouver (which may require station staff at curved platforms for disabled access), or
c) run GoA2 driver-only operation, with drivers assisting disabled passengers (as they do in Melbourne)
I don't have a firm answer one way or the other.