There have been plenty of fantasy transit network maps—maps that imagine the subway, rail or bus system they think their city should have. BlogTO points to a good one: a map that reimagines the Toronto Transit Commission’s subway network posted to Reddit by architecture student Henry Lin. BlogTO calls it “one of the most ambitious and beautiful (like, if you’re into that stuff) yet. It’s the subway map Toronto deserves to have—though we probably never will. I mean, if a one stop subway extension costs $3.35 billion, this system would cost a few trilly to build, at least.” Lin’s done a few maps like this one that seem be modified from the original maps (see, for example, Ottawa’s or Montreal’s); the point of exercises like his, though, isn’t the originality of the design, but imagining the expanded network.