As for Hikari's changes, they were not that much in terms of quantity, but the quality of her Rank 2 far surpassed Rom and Zaine to the point where Eva almost shouted out when she read the details.
White Light Healing was her default skill, one which pretty much every White Dragon started out with. It was a broken skill for healing, one that allowed Hikari to use Worldly Energy to instantly heal any target back to full health, removing all illness, disabilities or sequela.
Now though, the skill allowed Hikari to not just heal lost health and damage, but to restore all stamina (physical and mental) as well as mana. Yes, that was right, Hikari could basically turn a player into an eternal fighter.
If a mage was running out of mana? Just one beam from Hikari and they were back in the fight, ready to fire off their spells like they had drank an expensive mana potion… without actually having drank one.