This is a simple variant that works fine when playing 150 pts casual games. It is inspired in the 1940 "Battle over Britain", when british Interceptors flew 3 planes "V" formations and the Luftwaffe's 109s a "Four Finger" 2+2 planes formation.
The Rebel player must purchase 3 ships, same model, one Named plus two Generic. The Imperial 4 ships, same model, two Named plus two generics. Remaining points can be expended as you want.
Every player can use one die reroll every game turn if the ship rerolling is part of the Formartion and is within Range 1 of another ship of the same formation ( Watch your five low )