Well we just got 2 new world recently and I would think that the focus should be on other features like: World Switching, Save without exit, Customizable HUD, Levels beyond 25, Group Leader controls, and many others.
I am not against a Sydney world, just think others issues should be resolved first.
As much as we all like new roads what Zwift need to focus on now is improving the ride experience e.g. customizable HUD, controls for group ride leaders, better rider dynamics like braking into corners. The new competitor CVRcade has all this but not the fancy graphics.
Love the app and enjoy spending time in the winter months virtually biking.
My request to you is, Please create a Retro Chicago. You have Futuristic New York, how about an old school Chicago. My thought instead of going “up” like you did for NY you go DOWN into the subway or “L” or go down into “Lower Wacker”. I would like to see loops that around all the major buildings and museums.