I recently came up with an idea for a new gameplay challenge—and honestly, I’m surprised that something similar has not already been added to the game.
The player would receive a permanent debuff that causes all hostile creatures to deal 15–25% more melee and spell damage to them. The exact percentage would, of course, need to be properly tested and balanced. It could potentially also be adjusted differently for each class.
I think this could be a challenging but genuinely enjoyable experience for hardcore players. They would need to make use of every available option in order to survive. It could also strengthen the social aspect of the game, as players would be more likely to form groups, buff each other, level their professions, and prepare more carefully for dangerous encounters.
This would be a standalone challenge. However, players who completed it together with Hardcore mode could receive an additional reward, such as a special title.