Blizzard reasoning for AoE Change in Shadowland ( official post) :
https://us.forums.blizzard.com/en/wow/t/aoe-changes-in-shadowlands/490978
Now after i read that i understand that change.
And after a few discuttion with some of my friend we found that it bring more skill and knowledge into dungeon too : “ok that melee mob is very strong, druid can you root him ? and that spell caster too, polymorph him mage please.”
It will now need strategy instead of pulling all mobs and just thinking of DPS. We were too much focus about the DPS number instead of using class utility.
I was for the big number before in M+ but if it bring reason behind classes CC and thing. i’m now up for it !