After considerable time building Dragon Eyes during Dragoon's Blood of the Dragon mechanic, the reward is Life of the Dragon/Nastrond, a 320 potency line aoe. To maintain the Blood of the Dragon gauge, we are required to use the fourth/fifth step in our single target combo, eschewing other aoe. Disregarding how punishing the dragon eye mechanic is, or how long it takes to achieve Life of the Dragon, why is the end result of focusing single target skills on Dragoon a line aoe?