I agree, but please add more details to your suggestions like why is this route special, what are the stops, what trains? Maybe some pictures.
Of course: The special about the Arlberg is definitly how steep the route is: up to 30 permille makes it quite special. Great stops like "Innsbruck, St.Anton am Arlberg" which are also interesting tourist spots. Additional Innsbruck would be a hub for further routes like Brennerbahn, Karwendelbahn or "Unterinntal-trasse". Regarding the trains, vectron and 1116 are allready on TSW and both are driving a lot on this routes. Maybe there would be room for a new 1144 or railjet as well?
