Weighted voting has its place. McGowan criticised country votes being worth more than city votes, but I doubt he has the same complaints over WA votes being worth more than NSW votes in the Federal Senate. Ensuring equitable treatment for smaller regions has its place. That said, proportional representation is a quality voting system and will ensure a fairer representation of parties, which means the Nats and Greens are a chance to nab more seats and represent regions like the North or South West, while eliminating single issue parties.
Gough Whitlam put the issue in context when he said Sydney & Melbourne would run the country.