A quest is a good idea. Here's what I think:

• Set up a place where we can suggest moving miscategorized nodes. There oughtn't be an XP bonus for posting there.
• Let registered posters each volunteer to take one or two questions. They'll arrange the answers into one comprehensive document, weed out the cruft, and polish things. Pending approval from a couple of other monks, replace the whole thing with the new writeup.
• Make Categorized Q&A read-only by normal monks. That'll prevent miscategorization in the future. I see these as mini-tutorials.
• Post a link to the Q&A section near the place where you can post a new SoPW question -- "Want a fast response? Did you check the perlfaq? How about Categorized Q&A?"