I'm sure you totally expect this and I am sorry to say it again but the southeast now has enough routes and many areas such as East Anglia and the Midlands have nothing, so personally it's a no. However I do understand that some people do love the stuff down there, it's really not for me. Again sorry for repeating something similar to what I said on your 171 thread.
I would be much more open to suggestions outside of the southeast area though as you seem to have some quite different and interesting ideas.
Only if set in the DEMU era with Class 205 and Class 207, plus the freight line to Dungeness still operational.