We are currently looking into how we can achieve class balance to help other classes be part of the game and not just sinx / champs.
I don't think we should add another skill, as Ryoji said any class can use bolts. Instead, to aid Holy Light, we can add a new elite weapon for priest that boosts int / MATK. Even maybe add a boost to heal on the weapon?
As for making buffs a higher level, I thoroughly disagree with this. Buffs are NOT useless; buffs are very helpful for any class you play. & yes, we do have people dual clienting priests to buff themselves...