Are you seriously suggesting that a rail/light rail line is not needed in a place where the bus services are not coping because they are used by a number of volume of people more commonly seen on a train line, just because there is a parallel tram line that moves at a snails pace 1-3km away?Its all about cost and benefit. Many other heavy rail projects are more economically sound than a Doncaster rail currently. In the future it is uncertain much will change, the population of Doncaster is not increasing at the same rates as Wallan, or Tarneit. These areas are not well served by any good form of transport.
I'd expect this kind of comment on a Herald Sun thread full of people wanting to carpet Melbourne in bitumen. But on a rail site? Wow.
North East link is a catalyst for improvement in the local road network around Doncaster. It has a DART system in place (semi-BRT system) and is successful. The tram route can be turned to light rail, if stops were made DD by raising the road, and the tramways can be cleared, with traffic priority lights. This is very difficult to implement but is utilising our current infrastructure. Another proposal which is better is turn the DART to a proper full BRT. This only cost 250 million or so. Can be done quickly and would hugely benefit the area.
Melbourne already has a dense network of radial network of railways. The future maybe trying to may the rail network orbital and able to connect Doncaster instead to a bigger orbital rail to provide demand outside the Melbourne CBD and promote increasing the employment hubs, instead of all the rail traffic heading into the CBD.