Squads. Squadrons. Groups.
A very rudimentary grouping system for people to keep track of their friends in multiplayer with AI vehicles on.
Members of your squadron are displayed as cyan with names always shown in HUD.
Beyond the Scope:
Additionally to HUD colour, squad icons appear on the map with squadmate's names in an eye catching colour.
A small UI element showing very basic status of squad, vehicle icon, distance and bearing.
Options to name or lock your squad.
Chat specific for squad.
Well Beyond but Cool Ideas:
Electing squad leaders with a purple or gold (both options compliment both team colours) UI icon to indicate that role.
Squads can be recognised throughout the server by slightly different brightness values in base team colour, offering a sense of reputation.
Extend the concept a bit further and integrate a ping or marker system for those within a squad to help streamline teamwork.
See below for a cute little mockup