Back in Jan 2018 another person had asked if AoC would have an epic weapon quest chain similar to what EQ had implemented. Steven had responded by saying "There will be epic rewards, for epic effort yes". IDK if this was a generic answer or was this confirmation of an epic weapon quest.
Having played EQ, that was a concept that I loved about that game and wished other MMO's (like SW:Galaxies - ie light-saber construction / crystal meditation) would have implemented in their games. With the way AoC is pushing for more in game community interaction I can see this concept working well withing AoC.
For example Player A decides to master processing but requires a master crafter (Player

to make a staff. Player A can farm the required materials (including getting the required recipe) and then Player B can make the staff. However, the materials (ie frost wood) for said staff may only spawn within a specific Node type, during a specific time of season and the Node must be linked to a Metropolis. The power crystal / augment for said staff could be a very rare drop from a Legendary world boss and say the recharge material follows the same guidelines as obtaining the frost wood. As a side note / idea - said material can also be stolen during a siege.
Setting the epic weapons apart from legendary weapons (or shields) is augmentation. The idea I have goes along with the 64 different class possibilities. Completion of the epic weapon gives the player 2 additional augmentation slots. One being linked to their main archtype, ie giving a tank an additional 5% damage reduction when using X skill from their main archtype. The second augmentation is linked to their sub archtype and again gives an additional bonus to a sub archtype skill. Ie a Spellsword's Rush ability with a fire element augmentation which adds a DoT would also add a 2 second stun with the 2nd augmentation from the epic weapon.
The second archtype augment would have to be changed if a player changes their sub archtype.