Any British routes would make great additions. I personally love historic routes like trans pennine and tees valley, its almost like going back in time. We need a br green era route
It really would be best to create those threads in those sections: (If there isnt already one about the same route) https://forums.dovetailgames.com/forums/route-suggestions-proposals.76/ Take a look into the suggestions there and add more info about your own suggestions like you can see there. Makes it much easier to attract other players for your suggestions and therefor the chances are higher to might be getting created from DTG.
Earliest is the 60’s or 70’s btw the driver is still there but he just opens the doors and closes them The Victoria and northern lines are too