Now I don't know if this would work as such but maybe a mode where you act as the trains guard would be a cool idea... Things like guards key to activate the desk and signal codes for the driver would be cool. Obviously this would be difficult on some trains however I think it would be a cool long term idea.
I think it would be cool on the older British routes as guards had a lot more duties then than they do now however I would welcome it to the game and use on any era route.
It would be a great feature to add to TSW 2, I would like to see this being tried out at first on Steam route Liverpool-Crewe.
It would probably only exist in connection with the "roles" (suggestion from the last survey by DTG on TSW2), together with the MP. At the pace of DTG, I doubt that this will be realized in 2-3 years.
I think this would be a good suggestion for DTG to look into, especially following the fresh announcement of TSW3