I used to live on the Sunbury line (2018-2023) and even when I did, I wasn't a huge fan. I won't knock it until I actually get to use it, but I really thought it was just going to be annoying to try and connect with trains on other lines, since rather than getting on a train to Flinders then connecting onto my next destination, I'd have to get off at town Hall, then walk to Flinders, then connect to my train. Or even worse would be the connections with the Craigieburn and upfield lines, which will no longer be a walk across the platform at North Melbourne.

It's not the end of the world, but it's the sort of thing that would've added time to my commute (Sunbury line to Craigieburn line, at the time). It'll be good to see CBTC/HCS rolled out to Sunbury, though. Some days, they ran so many trains, that the signalling was barely keeping up. Trains were occasionally as close as 3 mins during peak, and a combination of peak hour chaos slowing things down, and trains not clearing signals fast enough mean that they ended up running more like every 5-7 minutes, and always a few mins behind.