They really should add Primal fights to the Masked Carnival for Blue Mage to solo. Even from a lore standpoint, they can find a way to justify it. Right from the start, we learn that Martyn has a pair of beastmen friends which can be used as setup for mutually beneficial dealing with other tribes. And let's not forget, the audience of the Masked Carnival aren't watching any ordinary Blue Mage. This is the Warrior of Light. Who wouldn't pay to see our famous warrior battle a Primal right before their very eyes? One summoned from a finite number of crystals for safety reasons, of course. That would make no difference to the audience. It's still bad for the environment you say? Nonsense! There's money to be made!