The Rolling stock on this route is Class 390 Pendelino and Class 221 Super Voyager , this is the WCML
Even though longer routes are being done I think that approximately 400 miles is a bit excessive so I would advise focusing on a shorter section such as Euston to Birmingham at 113 miles or Preston to Carlisle at 90 miles. Personally though I would prefer ECML.
I don’t see that happening in a single route release. That’s a lot of work! I won’t be surprised if we get WCML DLC released in 100 mile segments. This also means they can do different sections in different time periods for variety. I want to see WCML Shap, Preston - Carlisle brought over to TSW with the BR Class 87 and Britain’s best tilting train the BR Class 370, APT-P
Ok were do we start first it's too long second not enough detail third you haven't stated all rolling stock fourth what stations and fifth it would take decades to make this and tsw is on consoles so this would never work it would be a laggy mess