I dont see the need for it to be so realistic, this is a RPG, where you use magic, spells, summons and fight mistical monsters, it is not real from the start. I dont see the need for it to be more realistic.
I think its fine that you have to save before going to major fights so if use the wrong strategy and die you can go back and try something different.
And i think healing is fine, if you have a game that has priest thats the priest main purpose. And he uses his knowledge of magic to heal.
I think sinergy needs to understand what a RPG really is.