This would defeat the whole point of the role system, they added it so every time they make a new job they don't have to make a new animation for the exact same skill. If they gave esuna a unique animation they'd have to give every healer they add from now on a unique animation, then you'd get tanks complaining they want shadowskins animation back so they'd need to make new rampart animations for every tank, then the role system just becomes a waste.