They could make two kinds of animation: one for you and your party (meaning only your pt will see it), and one for everyone else (this one showed to everyone near you, but not in your pt). The first one could me some awesome mind-blowing spell animation like in FFXIII, and the second one something like we have now. This way we could have awesome animations when playing and not disturbing other players with lightnings from the sky, but they'll still see we're casting spells