Southern End - London Euston to Rugby 75 miles Northern End - Rugby to Wolverhampton (to include Rugby Cement works) 44 miles depending on the time period chosen there are a multitude of trains that could be used, and expanded on with future train DLC. Class 90 with Mk3 carriages and the Class 321 EMU probably had the longest tenure along with Class 350 and Pendolino more recently.
As much as I wouldn't mind any era for the WCML, I'd much prefer a modern one with 390's involved just to fill out so many empty stations on other routes.
Ahem https://forums.dovetailgames.com/threads/how-to-and-how-not-to-make-a-suggestion.72089/ to the OP
