Several proposals have been put forward by various groups to expand the Melbourne rail network—proposals for additional rail lines, extensions to existing lines, as well as electrification to existing lines and new stations on existing lines. Some of these plans were so seriously considered at various times that they appeared in the Melway street directory, and on suburban train destination rolls.
Some of these proposals include:
A proposal made by Metro Trains CEO Andrew Lezala has been for an electrification of the Craigieburn line to Wallan.
Plans for the Doncaster line first appeared in the 1890s, when the Government was considering a line from Heidelberg Station. Plans again re-emerged in 1969, when The Age announced that the Victorian Railways had started detailed planning for the line, which would branch off the Hurstbridge/Epping lines at Victoria Park and run down the Eastern Freeway median strip, then to Bulleen Road, Bulleen, where it would travel between houses and proposed tunnels to Doncaster East.
By 1982 plans to build the line had been shelved by the state government, and by 1984 land for the line once it left the freeway had been sold. More recent proposals have suggested the line would run in a tunnel from Bulleen Road to a station at Doncaster Hill (Shoppingtown), or branch from the proposed Jewell-Windsor line at Parkville station. In this case, an additional station would be built at Carlton before the line reaches the Eastern Freeway.
During the 2006 state election, the Victorian Liberal Party promised to extend the number 48 tram to Doncaster Hill, claiming that constructing the heavy rail line would cost around $1 billion and was deemed too expensive an option.