Only played tutorial so far- Thought I needed to report the missing hud during the tutorial as a bug at first but read you can toggle it on off with G?
In any case,also in the tutorial ;It is unclear when all passengers have boarded - So maybe a train conductor blowning the whistle to signal you can close doors would be good or some other indication yesh
Maybe train conductor could be another interesting role for players in multiplayer ,come to think of it -2 players managing the passenger train-could be nice with friends