I think it would be a lot of fun if Anet added an epic weapon quest to PVE. This would be a long, extremely difficult quest, involving all 3 chapters, with a wide variety of tasks and trials to complete. In the end the reward would be a tolken that would be used to purchase a custom weapon at a custom weapon crafter, similar to the cape guy.
The crafter would let you design a req 8 weapon, you chose the damage type, inherit mod, attribute req, and upgrades depending on the type of weapon. After that you can choose a skin from a variety of existing and unique options. Choose a particle effect, colors, and size. When the weapon is to your liking craft it, the cost would be your tolken. The weapon would of course be customized to you, so no trading.
No part of the quest would require gold or riches of any kind... all would require skill, organization, and teamwork.
M


This quest would have to be at least medium difficulty but with minimal grinding and no locked gates.