If the Russians won't mind DTG photographing these superb works of art stations. I am not sure on which line, it would have to be the 60mile one or slightly less. https://en.wikipedia.org/wiki/Moscow_Metro But this i've seen in documentaries of how ornate the stations are, DTG did a great job with the Bakerloo Line, I'd personally love to see them try this and make it more 'Train Sim WORLD' than Train Sim Three Countries. I was going to propose or suggest the Piccadilly Line but I've already been beaten, I hope for a Picc Line but this was on my thoughts.