I am truly enjoying playing GW2 right now and tbh I really am too deep into GW2 to imagine a GW3 atm. However, when this game has run its course and has been expanded to the brink of breaking itself, or when the player base has diminished down to the point of merging servers until there are 5 or less left, then we can talk about GW3. But I don't see them working on a GW3 anytime soon.