Have no fear Neptune. They keep saying we're whining/complaining but when they die in battle, because we don't have enough MP to make "miracles" happen then the whining will be a shared effort.

You can manage your MP any way you want but it also depends on the rest of your party and how they play. Sometimes it just doesn't work the way you want it to. I'm not saying it should be easy enough to spam cure aoe but at least don't drastically raise the cost of cures all at once.