it would be cool if we had the berlin subway with F90 and H01 cars just like we have in world of subways 2
I like the idea of having a U-bahn route with two different types of traction. I've only been to that wonderful city once so I can't remember the individual routes but ideally it would be one with a bit of elevated and outdoor running rather than some of the routes that, I believe, are entirely underground. It would be good to see the city landscape.