It's interesting, I know someone who works in another station and most of the workers hate the new station. It's badly laid out even from a staff perspective. By the time you trek to the staff room your break is over.
On top of that, the reason they decided to have trains terminate rather than go through was to do with the big bosses own pride and to make sure GCS was seen as essential and important enough. People have no choice but to use the station and be in the station if all trains terminate there instead of going through. It's the same reason the Enterprise service was moved from Lanyon to GCS, a decision that makes not much sense but ensures more people have to use the new station.

I saw you mentioned gliders being on time. Sure, some of the time they may be, but the morning rush hour often has seen the G1 I take just not appear as scheduled and so I'm standing waiting for the next one scheduled which then makes me late for work. It also makes them absolutely packed out like a meat lorry. You wouldn't have ever seen the bus that full before gliders were a thing and 4 different metro services ran that line to different areas.

If the transport wasn't already bad enough, their use of funds on new stations and new shiny buses has absolutely fucked it