I'm in agreement with Nox.

But as far as the video goes, like others have pointed out, the Water spell looks cool, and it's instant. I think this mechanic opens up doors for battles. I was worried about how Stone looked in one of the events YoshiP did. The rocks would just teleport to the enemy, which looked weird but that has been adjusted too. (Testament to things gradually being updated)

Also, the WHM parries some damage. Was that always possible?