Hello . I got a suggestion for you , add route extension or merge some of these. But why ? I take an exemple with RSN and RRO route , imagine you want to drive a freight train from Finnentrop to Wuppertal , well you can do it , but you have to switch the route etc , that's why merging them would be a great update and make this content more immersive ! It could work the same wat by doing routes extensions , imagine being able to drive a train from Marseille to Lyon , like on TS Kind regards.
This is the only way long routes could be created. This proposal has already been made. I fully support this proposal.