Yes, Ulduar was something to remember. I don't understand why a LOT of people hated it

While I'm aware that it's hard to translate beat'em'all or mmos mechanics to a tactical cRPG, I'm merely throwing things that I felt helped shape a fight into a fight to remember. The Jandice Barov fight seems reasonnably adaptable to something like DOS combat system, and try to get the player to really pay attention to what is happening.
Maybe throughout the chapter you could be chasing hints and clues on how the boss actually looks, trying to sort out what is myth and what is truth, so that you'd know what you're looking for when you step in the fight, as long as you were willing to play the game. Or else, the fight may be something really , really hard.
I dunno, it's just random things that may help tie the ongoing story to a boss fight, as well as make it more spectacular.