A very simple one this and as the title suggests, can we please have more mastery both for the routes and traction. I find it adds interest and encourages you to try stuff you might have overlooked. For example, I thought driving the German ICEs would be boring, but having done this for the Aachen route to get the mastery found I'm really enjoying the traction.
It would be cool I guess to get more mastery in routes (even though the challenges are so easy to do that I don't feel like I "mastered" anything)
