In case what I was talking about isn't clear (not saying that's your case):
Look at this video:
http://www.youtube.com/watch?v=6wdkMBIwDCI
At 00:31~, third eye, meditate, and penta thrust are used. The effects stay until they're done, while the character model transitions to the animation for the next attack.
I haven't found a good video example for FFXIV, but that simply doesn't happen in this game.
Using Raging Strike and Ferocy the same way (in quick succession) will cut off the graphical effect created by Raging Strike in a very ugly and abrupt way. The effect just dissapears as Ferocity is used.
Ask yourself this: does it really matter if casting Aero IV brings forth hurricanes and tornados, if they're going to awkwardly dissapear midway because you used Spirit Dart?