Originally Posted by
Kabooa
Cataclysm slowed that down a fair amount, introducing the idea of a basic kit for everyone (The Fast/inefficient, the medium/baseline, and the slow/efficient heal), while giving them unique tools across the classes that solidified them as better in certain areas. (Druids and hots, Priests and mitigation, Shamans and Totems, Paladins and Beacon). We more or less have that now, but the encounters are formulaic scripts rather than, say, an assortment of five mechanics that the boss will choose based on RNG/other criteria.