The idea i have is so when placing down an augment, using a new item (Clipboard or some sort of writing thing) it stores filters that can be applied to the augments, this can vary from a specific piece of roiling stock, to multiple stocks, types of stock (like only locos or only coaches) specific items or entity that reside in the cars, and even a blacklist mode that dose the opposite.

This feature would revolutionize automation for IR with the ability to set paths for certain trains, as-well as fix loaders taking the locos fuel and cars being loaded that you don't want loaded.