
World of Warcraft recently embarked on the massive undertaking of redesigning all of its many specialisations to work without the assistance of UI mods (addons) for Midnight—mods which previously automated a ton of the complexity of its classes.
As an outlaw rogue, for instance, I had an addon which told me when I should cast Roll the Bones, because the decision making of that choice involved keeping track of several separate, randomly-generated buffs that each did something completely different from the other.