Mobile phone users have long benefited from "rollover" plans where unused credit is rolled over to the next month. This benefits the user,when their usage is lower, for instance when they are on holidays.
With the introduction of myki the time is ripe to introduce this same scheme to public transport users. This initiative is all about expanding the public transport user base from office workers and students, to more casual users, that would otherwise catch a car. Obviously there should be limits on the rollover, similar to what telcos do, say two consecutive months, so casual users have incentives to travel more.
The thought process in this is casual users are hesitant to buy longer term tickets knowing their travel plans are sporadic. Giving them a safety net of 2 months to use their ticket should enourage them to make a longer term commitment to public transport usage. Hence providing a piecemeal step by step transition into becoming a permenant public transport user.
By also enforcing myki "touch" off to participate in this "rollover" initiative, the goverment provides an incentive for Melburnians to learn the touch off system. In the long run, benefiting the system by providing a better understanding of public transport user profiles.