I can agree for harder dungeon related content. WoW's Mythic+ just isn't what I'd wish for this game though. The only thing I ever found fun about Mythic+ was the modifiers to trash and players. The concept of mad rushing the dungeon for hopes of a higher level key to just do it all over again was never exciting in the least. I'd prefer something challenging because the encounter is challenging, not because we need to cheese it to beat a timer.