On creators club i have seen so many scenarios where i need to buy x train from x route to play, To fix this problem and to help creators let their scenarios have more reach, i think it would be good to be able to choose locos to sub in for certain users who do not own the main train for certain services. I think it should be a 1 to 10 ranking of what subs in (1 being what would sub in if the downloader owned all the routes out of the options that were to substitute)