Yeah Fanatical Dance is a Biotch, My ls just has a paladin tank it with no weapon while mages nuke from afar, once the pld gets charmed the melee all come in and rape it.
My Dynamis LS tried this. It didn't work. A common misconception is that Fanatical Dance can be used only once. Actually, the NMs can spam Fanatical Dance if they so desire, as we found out the hard way.
It's funny to see a huge group of charmed people just mowing down their own teammates like nothing else. I've seen a PLD get swallowed up by a mob of charmed players, going from 1500 HP to 0 in two seconds.
If only my Ballista teams could be so efficient...