There are already several quests in game for weapons.
Raiding tiers are pretty spread out, making an item "best before raids" isn't really that easy and tbh if it was the best item before tier 1 raids nobody would bother questing for it because you can buy better droppables.
Every class already has a few class-specific quests, the starfall quests at ~30 and the Thurgadin quests at ~55 provide class specific item rewards.
Your idea has no content and you didn't even spell all of the words in it correctly.