So far this game has been amazing but will we be seeing more routes on and trains soon ? For example: would love to go beyond reading station on the GWR - class 166.
WSR will be the next route followed shortly after from RSN. Beyond that they haven't shared information on the next route but following their current scheme it probably is an American one. There are forums here for route suggestions, you might want to comment /submit some things you want to see there
