Because that wouldn't be at all overpowered. Imagine Castle Wars with a Guardian's ward + grounding boots and full sagittarian, or Nex with a hexhunter bow. Corp with a primal spear, etc, etc. It would make Dungeoneering essentially give out the best items in the game, making almost all other methods redundant, as well as making the current chaotics useless, why would you ever choose a chaotic crossbow over a hexhunter bow, what monster do you actually range that doesn't use magic? I'm pretty sure he's saying for use within dungeoneering.