I would love to see the S-Bahn of Berlin in the game. The lines which run do not go underground in the central city are just awesome as you drive past many of the iconic buildings of Berlin. They stop at many big stations, including Berlin main station (which is huge) along the line. The tracks are at a higher altitude than the ground, so you have a great view over the city from the cab. Other trains to be seen there are the Talent 2 in red livery, many ICE trains, dostos with thr BR 182 and KISS trains from "ODEG" (the only not Deutsche Bahn trains). As for the S-Bahn trains, we would definetely need the BR 481/482 as it is (in my opinion) the most iconic train to ever be on the Berlin S-Bahn. It looks just so cool and the sound is completely unique. (<--- image from Wikipedia.de)
