I don't understand. Why would this fight get nerfed? You've seen all the mechanics before at some point in this game. Only now those mechanics are on one boss. More than likely, this will be the wandering minstrel fight (just like Ultima weapon and Thordan for ARR and HW final MSQ bosses respectively). Most of the time, you just need to talk with the party on how to do mechanics and have patience. I know patience is in pretty short supply.