Bridging the gap between Koln and Wuppertal could open up all sorts of possibilities and would be a busy route in its own right... Aachen to Finnetrop freight anyone? Hagen to Aachen ICE service maybe?
I really like the idea of DTG merging up some routes, i have a thread on Cologne to Duisburg, wonder what players would think about that. https://forums.dovetailgames.com/threads/bridging-the-rhein-rhine-köln-hbf-duisburg-hbf-66km-41-miles.33175/
