The Importance of a Memorable Boss Fight

Diablo 4's boss design is based on the way that crowd control and unstoppable works. When you're fighting regular monsters, the players are mostly acting on the monsters. But when you're in a boss fight, the boss is going to do things that cause the player to react. And that's part of where it becomes interesting because you have a goal but these things are happening that are causing you to modify that plan.