It heavily depended on which class/spec you were. Afflock and Spriest were the twins, in which case it was brutal if you didn’t play specific builds or legendaries to make it easier. Spriest in specific had to play surrender to madness to get enough DPS to burn through it before they got overwhelmed.
As an afflock I had to make macros for the doomguard (removed) to go stand in puddles that I couldn’t get to so I didn’t die to a mechanic all the while being chased and never really given the chance to ramp up.
Were their people that did it without those things? Yes, but they were not your average players. I’m very curious to see if some challenges are even doable now that the legiondaries are gone. Guardian druid is top among those because they had mandatory
to make the tank one doable for them.
I guess they can always run torghast to make: