Yeah, I never use summons. They usually go for me 1.5 boost with the "Summon Unused" accessory. Increasing my boosters is of a much more importance than any summons work imo.
But getting Piercing Cry (Behemoth, I think it was 3x brv boost but quickly drops afterwards) or Hellfire (Ifrit, 1.5x bravery) for Squall would make him the build I want him. Back to the Wall is all about insta-rape. XD