There's no formal request process — but here's how to make your voice heard:

Go to railway.com/roadmap and search for "Australia" or "Sydney region"

If it exists, upvote it

If it doesn't exist, submit it as a feature request via the Feedback section on Railway Station

You can also post in the Community section on Station and tag Railway staff — they do monitor region demand based on user requests.

Railway has mentioned expanding regions based on demand, so the more Australians who upvote or request it, the faster it moves up the priority list.