So as far as I understand, in closed beta as long as you had 5 people in a party, you could at random times get a party even field boss which when defeated dropped headgear and accessories, most of which are not available in the game today (some info: The Different between Field Boss and Party Event Boss)
What I don’t get is, why did this never make to outside of beta? Seemed like a great mechanic that would encourage people to be more social and party, on top of which it gave access to headgears that were never reintroduced, seems kinda silly to not put it back in the game. Hope we’ll see it again someday.