This is a lovely picturesque route with lots of history currently served by GWR's class 158s. There aren't many modern(ish) rural diesel routes, and I also feel that the class 158 will be a great addition as the only other train similar is the class 166, which is completely different (mostly mainline use, higher speed etc). The route itself is very pretty with many places of interest along the way. The route is roughly 30 miles long and would provide a unique experience and would be a great addition to the game.