Byte, one thing to keep in mind if you find a way to data mine from wowhead is whether or not a kill quest is buried in a chain that had a collection prerequisite. Before RAF was released I had been toying around with a collection free quest outline but kept running into hurdles with a large chunk of my wowhead searches being follow ups to collection quests.

The other side of the filtering was that some collection quests are ok, those being group drops, usually monster's heads. ?(

Maybe one of the more query savay multi-boxers can offer a more effective search filter set that would help sort things on wowhead or wowdb.

-Stav