It was expected to be nerfed on normal and heroic. Beta lasted so long and class tuning happened so late that very few did raid testing for them to tune bosses properly. Although I do like pre-mythic progression and HC raid taking within a month for a 2-day semi-hc guild to clear, normal is exactly the very casual but organised difficulty, it shouldn't be hard to clear at least 80% of it for a heroic guild. Our (11/12M Nyalotha) with a 30-man group of 175-184 ilvl players did 5/10 normal and we were pretty close to downing Council as well. Shriekwing, Hungering Destroyer and Sun King's Salvation were 1 shots. On Sun King's we actually went in completely unprepared and were simply aoeing the adds like crazy, it was a mess that we 'ran out of mob waves', as in no wave showed up after the first shade phase, dunno if Blizzard put a limit on number of waves or not, but that's what we got. Huntsman and Artificer took several tries, but it didn't feel like it was dps related rather than getting used to mechanics. Blood Council took its time due to figuring out the kill order that was most convenient for us and trying out different ones, but there was always progress. Overall, for the 1st day of mostly tactically unprepared raiding it went quite well, was looking forward to at least being able to do 3-4 bosses on hc, but looking at wowprogress doesn't seem likely.