I grew-up in the West Midlands, and remember BR Class 304 and 310 Electric Multiple Units operating all over the Birmingham and "Black Country" areas during the late 1980's and early 1990's. Especially on the Wolverhampton - Coventry all stations service. The 304's and 310's were eventually replaced by Class 323's on this and a lot of other routes towards the end of 1996. If Dovetail ever add Birmingham New Street station to Train Simulator, there is a lot of operational use for these three EMU's on lots of services.
Birmingham New Street already is in TS, with many routes such as WCML London and the Midlands V4 and the XC route (made by one of my mates)
the class 304 and 310 EMU trains to see passengers on Comuter trains out of London Liverpool street to Colchester and Ipswich and they are Beautiful trains to see and the class 323 to see passengers on comuter trains from Reddich to Lichfield trent valley and Manchester Picccadily to Gossop via Guide Bridge and crewe via Stafford and stoke on trent trains to see thease units in the game will need a route for them