1. the livery selector combo is obverlapping with list of stops and is thus not usable for direct choose, but only for scrolling
2. it should be limited to liveries that are used by vehicles using the line
3. when picking vehicles in depot, info about available liveries would be very nice.
When speaking about timeline, it would be nice to be able to turn off the timeline only for liveries. However in that case it would be necessary to show not only the livery scheme (like LMS/GWR/BR/Blackpool/Sheffield/...) but a specific livery (BR-Green, BR-Blue, ...). This would be extremely handy in multiplayer games, where players could use liveries to distinguish from other players.