Phantom League: Pilot Academy, the second expansion for Phantom League, includes two separate and major optional additions:

Battle rules, which change the battle system radically, and Galactic Balance, which make missions have a larger effect than just Recognition, and Surface Missions, which is another way to gather Recognition (and affect Galactic Balance) Phantom League: Pilot Academy is meant to make a player?s immersion in the world of Phantom League even deeper, while offering more tactical choices during battles. Phantom League: Pilot Academy can be used without Mostly Harmless, the first expansion for PL, although it includes a separate rules booklet for those who do use Mostly Harmless.