Dungeons should be full of rage quits and wipes amongst the general populace.
Not everybody should be able to complete the dungeon simply by recruiting 4 random pugs and going gung-ho, no teamtalk, silent gameplay and smash through content that easily.
Dungeons should be very difficult mechanically (and not just extremely large health with extremely heavy hits) because it’s focus should be about LEARNING, about the journey to finding a solution for an EPIC obstacle.
There should be many that will want to rage quit and many pug teams that will fall apart.
Dungeons should be a test, not a walkthrough. Finishing a dungeon should feel like finishing a marathon, with huge satisfaction and a dopamine rush from having overcame an EPIC obstacle.
This is what make dungeons fun, and what makes MMO gamers’ blood boil for more.