Attach a 'sticker' label to a vehicle. Through integration, labels can be added to locomotives or cargo-wagons randomly.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Transportation of the player, be it vehicles or teleporters.
Your mod is highly compatible with https://mods.factorio.com/mod/logicarts3 Very nice! Now I can visually label the carts and thus have a much better overview! (In a perfect world with rich text ;-))
Let me know when you have enabled rich text. Then I put your mod as an optional dependency into this mod https://mods.factorio.com/mod/logicarts3