Thanks for pointing that out. I strongly believe they should downgrade that challenge to rare or even uncommon.
I mean, seriously, why do they give the same reward for “pray at the Set Altar in Sepermeru” and “complete the Sunken City dungeon”?!
I think that would be fiddling with the wrong mechanic. Journeys are there to guide the players’ progression. Challenges should be what their name implies: they should challenge players to complete tasks and reward them based on the difficulty of the task.
There’s nothing wrong with legendary challenges being “truly legendary”, as people on this forum are so fond of saying 