Great! I have some good news for you - I have a 2.0 rework for this in progress. The old UI has been dumped in favour of a toggleable overlay instead which will display the distance for each train.
The 1.1 version had the potential to be poor for performance in the very late (with lots of trains) game, and part of this update will work to resolve that. That's basically the last thing holding it back. Fortunately I have a plan to resolve, it just needs the time to apply it - no hard deadline on what that'll be.
