In TSC, the 2D map includes the service label/name of each train (player and AI). Would it be possible to add this information to the TSW4 map screen? It would make it easier to track services (for example, if you saw one that you wanted to play), especially on busier routes.
I recall Matt talking about this on a stream many years ago, I believe back in the days of GWE. I think the problem was trying to do it in a way that doesn't make everything look messy, and is readable.
What about clicking the mouse on service to show the service name? That will prevent from "everything look messy". And this will provide more detailed bug reports about AI problems.