I think there should be more ICEs not only the ICE3 I think it would be cool to drive for example the ICE2 or ICE T. The coolest way to bring a new ICE Fleet into the game would be by adding the ICE TD its a Diesel ICE which give it a diffrent feeling other than its electric co part. I don't know on what routes ICEs drive but I would still love to see any of them in a future update!