I think a great route for dovetail to add is the Stansted Express. It’s a journey on a class 745 EMU by greater angular made by Stadler for there FLIRT family. This route runs from London Liverpool Street to Stansted airport. It would be great to have a GA train added into TSW2 and the class 745 would be great. The service may also allow for London overground services to run on the line from Liverpool st to Broxbourne using class 710 as it runs on the route also.