I have 2 ideas
Idea 1: The scoreboard should show which of teammates are in vehicles (tank and plane)
idea 2: The scoreboard should show the squad type each teammate is using at the time
So mortar, infantry, engineer, tank and plane, etc
This way during a battle you can better determine what is needed at the moment
Kind of like how war thunder has icons for the tank type a teammate is using, but instead its the squad type