What if FFG decided to make a card with the title "squardon tactics" or somehting along those lines. It would read- "If your list is made up of the same type of ship, all secondary weapons, Elitle Talents, Astromechs, System upgrades, and turret weapons are reduced in cost by 3"
It would encourage more simliar list without allowing there to be more ships (so no cray tie swarm)