I would like to throw out the following two moves for consideration. Mortal Gaze from Angra Manyu and the missles from Turn 8's The Avatar. These two moves do not inflict damage when the castbar is cast. Those two moves do infact consider you hit with the animation. This is exactly what OP is asking for. GO look up some WoD or T8 videos. You'll see that the effects are applied in perfect sync with the animation. This means that Square is capable of doing it and that all the other fights are off for some reason. Go ahead and test it yourself if you don't believe me. Angra Manyu, stare at him until even after the cast bar dissappears, if you flip around before the animation plays, you're golden! Same as for the missiles you have to stand in. The server doesn't declare the missiles inactive until after the animation plays of them exploding