LOL this is what's going to happen.

A GM appears as ANNOUNCED and finds an audience of several dozen players. Let's say at least 4 parties. Immediately he is bombarded by eager players trying to get his attention. Unable to hold a conversation, the GM just starts tossing the items to everyone... before logging off. Wonderful. There's no magic of interaction, no roleplay, nothing. Just some GM passing out candy. As the event goes on, fewer players show up until no one shows up at all because everyone has the achievement.

Nice.

Maybe people should actually think about the event and why it's special, before they suggest the devs and staff remove what makes the event special in the first place.

If you want the achievement so blessedly badly, why don't you find someone with the items, ask for one, have them trade it to you and use it on yourself. Congratulations! You just Cooperated with the Mythril Eye!