The other reason is the NSW parliament doesn't do private member's bills for some reason unknown to me.
The cost (to taxpayer) of a typical piece of legislation is ~$500k (so I've heard, can't remember where), so it's all but impossible for the local member to get a local constituency community project that requires state legislation off the ground.
The law is the reason the rails and steel bridges are still there. Even the lightest lines have non-trivial scrap value.
Better let the NSW parliament know that private member bills aren't done then. They didn't get the memo
And some of the private members bills introduced in 2012