For the 6th part of lvl 85 CQ, the box used to summon Pirate Bob--- Pirate Bob dies in like 10 hits from a Warlock, and then you get the quest item 100%. Isn't that a little too easy? :P
It's like the farming ores is the hardest part, and the last quest is easiest.

Maybe make Pirate Bob harder to kill? Because after you kill it you're left thinking.. "that's it?" xD
Just a suggestion.

Edit: I wouldn't mind redoing that part of the quest if needed.