Having raise animation immunity only really makes sense if the healer LB3 also makes the caster invunerable for at least some of that absurd cast time.

Otherwise personally I think you are fixing the wrong thing, if I stupidly raise someone into a fireball then they deserve to die again. All I want is the ability to start topping them up during the animation so they don't die to something stupid like an ADS vacuum wave or garuda's ranged hit. I don't care if it's working as intended, it's utterly archaic and makes little sense as is.