If there's one thing I am sure of, it's that Melbourne has one of the most passionate rail-loving communities out there. And the network is super cool. I think it would be super cool for there to be a Melbourne DLC featuring the Metro Network, as well as the entire (small) fleet of Comeng, HCMT, Xtrapolis (definitely, it sounds beautiful), and Nexas trains, along a couple routes exploring not only the City Loop, but also the brand-new Metro Tunnel.