Does this spells the end of leechers?

Not necessarily. The solution is simple: increase exp awarded for Healing party members. I just hope Nexon implements something like that along with the new leech formulas.

Do you realize how stupid that sounds. People normally pot even with a priest in the party. Also, how would you make it so that clerics gained the same amount of experience from healing as opposed to mobbing at himes. Also, your method could also lead to unfair lvling as a DK could just roar for 2 hours then a Priest would heal then gain ridiculous xp.