Monk GM in Qeynos talks about achieving all the colour of headbands. Looks like the quest for blue was never finished, and then purple became tied to Robe of Lost Circle quest which is tied to the epic. Blue headband item exists (alright for classic era, nothing gamebreaking) because you used to be able to kill monk GMs in Qeynos for it. These gm's were all changed to unattackable at some point it seems. The "restored" Kunark quests were a great success imo. How about finishing a quest for the blue headband that doesn't require the previous one(s) but does require faction and some logical targets. Keep the blue headband monk only, but restore a 2nd step in which you give the blue headband to a monk NPC somewhere in the classic world for something useful to at least all DPS melee.