World of Warcraft: Midnight is a singular expansion in the game's 20+ year lifespan, in that it'll be the first of its kind to not feature combat addons after Blizzard took an axe to them in its pre-patch.
To compensate, a lot of the game's classes were redesigned, since they'd been built under the assumption that players might be using addons to deal with complex mechanics (hello, Roll the Bones). But I've also been told, in an interview with lead encounter designer Dylan Barker, that the change has paved the way to new encounter mechanics, too.
