Build ring train line to fully utilise Sydney living space

The Sydney Morning Herald as usual was spruiking development today (see pic below) as it turned its focus onto Parramatta where high-rise construction has been changing the aspect of the view for travellers on the M4 for the past 20 years. This is nothing new.

I've got nothing against development, we need more housing as people change their work habits and spend more time at home. As the borders fully open up and more people come to Australia to live the pressure on rents will continue to increase as well. But let's really talk about how to "transorm" the city, let's build a ring train line linking Botany Bay to Parramatta (see pic below), and open up more urban area to the possibility of high-rise development.

If you could get the residents of Vaucluse to participate they could cut down on the horrible commute that people who live out that way must tolerate at peak hours on the roads snaking along the harbour. Imagine if you could get from Watsons Bay to Bondi Junction in 20 minutes at 8.30am, instead of the protracted crawl it requires now?

There is scads of unused land within the existing boundaries of Sydney (Eora) right now, there's in fact no need to go further west to take up viable farmland, we can accommodate twice the number of people as we have now within the same urban and periurban footprint if we put in more public transport. The LNP government has done a stellar job, replacing the neglect of Labor with investment in infrastructure that's desperately needed, but we can do more. Not all train lines need to via Central Station.