A sacrifice person!!! You kind of nailed it perfectly. BLM would loose some dps, you would loose about 2 hits before one was forced to switch to ice form, which would make the class even harder to play then it is even now, which is good since the rotation for BLM is super easy. This is spice of life. Since this class is already said to be hardest, making it harder won’t effect many people.

Regarding the healers, you would just use the ability as an emergency heal and not use it 100% of time. It’s an optional ability that one does not always have to have on. Kind of like the dark knight- he has reanimate like ability, how often does one use it? If you have a competent healer your not going to need it. As someone said, variety is the spice of life.