That does look fantastic. I really hope that several real-life locations are included in the maps.
Sakuragicho/Minatomirai area with all of the bridges and waterways would be fantastic. Shibuya/Dogenzaka would be incredible. Akihabara, while more of a grid layout, would be great, if nothing else then for nostalgia's sake. Even a 'Bedroom Town' like Minami-Senju would look amazing based on it's buildings, the location of the station and the curving roads that run in/around the railroad yards.