Fair warning: I may be missing something dumb.
If I understand correctly, Auric Level missions are supposedly locked so you can’t play them until you hit level 30. So, why do they list part of their rewards as boosted XP amounts? The rewards on the mission screen list a fat chunk of XP that’s significantly greater than what you get for playing a Standard mission … but what good is it, if you can only play those missions when you’re already at max level?