Add a damage ranking system in bosses

I think a fun competitive addition to the game could be a sorted list of how much damage every person did in a boss expedition.

All these bosses require talking to a npc to get out, what about adding another option to view who did the most damage to the boss and what is my ranking and damage output compared to others in the party.
I want to believe the game already has a way to store how much damage is dealt to a boss since the exp distribution needs to be sorted somehow, and the highest damage gets a white exp line, so might not be hard to implement?
The game already has @dpm function, but it only shows personal dpm and theres no way to compare against others unless dpm photos are shared

Of course such addition can sometimes lead to toxic behavior, but imo its adding a little competition and might give you a boost or motivation to get better gear or improve your damage output. The mobile maplestory game had this feature and i liked it