For such a big "event" mechanic, it has always seemed very late in the fight – doubly so with the risk (however low) of people trolling it or just getting it wrong and forcing the fight to restart.

At minimum, I think they could skip Nald's second round of "Fired Up" knockbacks and do it later. Either that or have it totally random per fight whether we get Fired Up or Thal's Balls.

In a fight where the key mechanic revolves around the boss having two forms with different effects and some randomness in which form is active, that could easily extend to major sequences, especially when you're expected to run the raid multiple times.