Legonis Machina - Imperial- In Galactic War, they use Deltas and Thetas, as well as the Invictus is leader Foundation - Raptor - In Galactic War, they use raptors, centurions and Ralluses, and their leader is the Nemicus. Revenants - Mofos love quads. They always use the spiderofmean, except their leader is the Osirus. Synchronous - Tanks. They always use Tank Class Coms, and their leader is an Aeson too (at least for now) Since the Metrarch is Synchronous, Obviously the Metrarch is a Tank Commander. Since we don't know much about that com, we know this at least. The More You Know ☆
*cough cough* feel free to reply *cough cough* You could look for an argument, ideas why it might be/might not be, what it might look like. C'mon.
Regarding the different faction leaders, I think it would be cool to have special commanders for the bosses for the different factions, and you could unlock them by completing galactic war on the highest difficulty or something.