So it would be like the relic quest, somehow to say, but maybe without having to beat 4 bosses, or with as many is the same.

The weapon cafted for the relic quest is easy to make, very easy and cheap. So you it would have to be maybe a bit harder to do. Require some type of farm or trial for the crafter in question.

This would be amazing, but then again, it would be greatly inconvenient for the person who is after the resulting item, AKA the raider (or whatever). It would require people to work together (or one to work a lot on his own), I hardly see it implemented. :/

Perhaps for the future relic upgrade quests? Or to implement the future Artifact sets... This would be a great great idea to implement for AF2-3 or whatever. (since AF2 has already been designed and how to get it defined). But for AF3 I think this would be great.

Instead of just simply having one relic quest, have your relic weapon and then relic job set made by crafters? This is excellent. (Keep the competent drops from raids, make the items required to compelte the craft of the set aquirable through hard trials, but somewhere else, maybe solo). And could replace the Myth AF set, leaving myth for either a more genereic set a bit inferior to coil/af gear, with less class restriction.