General skill changes of Eldains from KR wiki to global (excluding passive skills and smaller number changes):
>Ui (Don't know)
>shield skill halved, HP recover is linked to % max HP instead of attack power, SP on enhanced recovery upped
>Xion (Buffed)
>get a bullet on the 3rd attack instead of 4th, generally higher damage
>Vivi (More tanky, support nerf I think)
>defence reduction is a percentage instead of set amount+shorter duration, 2nd skill has a shield now
>Aya (damage buff, utility nerf?)
>damage is higher on first skill, her 2nd skill gives less damage to composed apostles but the buff was moved to her passive instead
>Chloe
>looks the same, small number changes