[herdymerzbow]

Rob Adams, former City Architect at City of Melbourne, did a study a little while ago that showed you could fit in 1 million more residents if you filled in grayfield sites with medium density, and without impacting on existing heritage zoning. Grayfield being existing under-utilised land (i.e open carparks that can could be built over).

It's been a while since I watched this video but the proposal is for 5 storey high developments along transport corridors that do not tower over suburbs like high density developments, but which also serve to engage with street life more effectively than existing low density.

https://www.youtube.com/watch?v=ZYJpdH-VGwc

It can be done. But obviously needs a departure from existing low density suburban sprawl, and a tight control over overdevelopment. But it can actually result in better amenities, faster transport, for residents.