A system similar to the one seen in Forza Horizon could help with consistency with railroad paint schemes across several locomotives. Using this you could make your own fonts and you could use the same logo you made for a railroad every time rather than making it from the ground-up every time.
id definitely love for them to make a feature where you can save groupings of layers to apply to separate locomotives and cars. It really should be as easy as saving a set of decals that you often use to some kind of database so you can pull it up each time when you make another livery. Not only does it save time, it would give us consistency, something very important when creating a fleet of custom locomotives and rolling stock
I wish they had that feature from day one. Literally, all my liveries that contain logos are different from each other. Also, a feature missing is the import logos in png/jpg format.