Instead of having to go into the train and sitting down at a specific compartment you could interact with the Conductor and he would ask you if you would want to travel to London and you would have to click the check mark. It could also work vice versa. One of the main reasons I think this should be added is because the quest that takes you to London teaches you that speaking to the conductor will take you to London, but this isn't the case. This leads to some confusion about how to get to London with the train, so I think would partly fix that. Also this would just a general improvement since it would use the GUIs system instead of the current quick travel system that's been there for years.
