I think a way to use any train on any line without having to use the scenario planner would be great. Here’s a way you could make it work. When your about to play a service, you can select any train you have from other DLC’s. There would be an option for AI Trains to spawn with the rolling stock you select and the livery you select. Trains can only be used on that line if they fit fully into stations and don’t clip into bumper blocks at the end. I would really like to see this as I like the way the Talent 2 looks on the Bakerloo with a Red & Black livery.