Of course, this design-a-quest thread started by Sheeplle on the US forums is full of all sorts of silliness, but in between that there's some interesting quest ideas. Basically, Sheeplle asks anyone on the forums what they would do if Blizzard let them design one (just one) quest for World of Warcraft. Ideas I'd love Blizzard to take some inspiration from include a low-level quest allowing you to jump to level 58 (if you already have a level 60 or 70 character) and a new Scarlet Monastery quest awarding players a trinket that increases the amount of experience gained in Azeroth. (I'm all for anything that speeds up the grind of new characters through Azeroth, though, so perhaps that's why these stand out to me -- after all, I think most of us have played through everything in Azeroth at least once.)
But what about you? If you had a chance to design just one quest for the game, what would you create?