I would like to see london underground routes in TSW. I think the easist to make would be the London Underground Circle Line as it's only 17 miles with 36 stations. It's unique because it runs in a circle through central london after leaving edgware road and then I hope more london underground lines are added though.
I would want a London Underground Line but not the circle line as it is mostly underground I would suggest the northern line.
I want London Underground... but certainly not by DTG. Imagine Metropolitan with stunted route length, trains with half the functionality of the Just Trains S8, no PIS, maybe reduced timetable. I'm good, just let a third-party do it D:
With an underground route you do get the benefit of not needing surrounding scenery detail for areas with tunnels, which lowers the workload in that regard.