Custom your UI. For example: new UI, displaying parameters of players and vehicles and adding many custom settings. (Btw, temporarily shows vehicles parameters when a player get out his vehicle and when player's cursor hover over the vehicle) I'll add integrations with magic mods later + new nice-looking icons to UI in the next updates. Almost 0 impact on UPS! Anyone can translate the mod on Crowdin. https://crowdin.com/project/factorio-mods-localization
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.