Actually, the Dovetail has already lay the route of Frankfurt S-Bahn city tunnel and the Frankfurt Hbf's underground S-Bahn platform, but they hide them in the game(see the attached files). I am wondering if it will be playable in the future even publish it as a new dlc
Kassel-Würzburg has the branch to Lohr, Berninaline has trackwork to St. Moritz... all does not seem to mean anything. Same with Frankfurt.
