Maybe I'm in the minority here but I much prefer the chaos and unpredictability that the fights bring. I found WoW (just as an example) fights incredibly boring in the way that everything was formulaic and predictable. My favorite fights were actually the ones in which taunts weren't usable and aggro was unpredictable, such as the princess fight in majester's terrace (I know I'm in the minority here, almost everyone else hated that fight).