Sure " it's an MMO " is not a valid answer for a lot of reasons :
I am a " good family's father " so I work every day to earn my family's living. I am not one of these eternal student, unemployed or annuitant who can spend all their days and nights camping world bosses...
Those who camp are not friendly for greed is their motivation and respawn time is kept as a secret treasure... So as soon as the boss appear it is killed and there is no welcome for helping those they call noobs.
It's been going on for years preventing players to achieve their quests and gain their elit skills...
A very small group of players monopolize the game and the proofs of myths (POM). It leads to the organization of POM reward based events that make us for a week hamsters in their golden wheel... It also leads to inflation and unfair trade for those who collect all server POM each day became insolently rich.
I propose years ago another way for POM. POM are only collected on furious boss. So boss should not be in furious mode when it respawn. There should be items (similar at Krolin's shear) that will made it furious. These items should be rare and could be find while farming by everyone. So those who pretend monopolise world boss should trade with those who find these items. And no one will have interest in killing world boss except to do his quest, to complete his elite or, if he has got the precious item, to collect POM...
In this way it could be an MMO and not a greed game with greed people.
And I am not naive, those who will claim that this idea is not good have an interest in the current situation persisting.