Drop rates for armour and weapons was reduced to stamp out bots. Okay, I get that in korea they were like a plague of rats and in eu many wanted them gone too because they were reducing their chances of getting these items. NCsoft's answer was to make all drop rates so low that they are virtually none existant. But what bots farm bosses and leaders? Before the 5.6 patch and reduction of drop rates LFG was full of requests for people to go kill leaders and bosses for the extra xp the quest gives and the mythical drops. Now, none, I do not remember the last time I saw a request for these.