the new epics from world boss are needed items and right now the drop rate is abysmal.
the world bosses made t1-t2-t3 raids obsolete given farming world bosses allows you to obtain t3 armor via relics without ever visiting t3.
i urge you to utterly remove the epics from world bosses and add them to t1-t3 raids as rare drops from bosses.
rings from vistrix-kyllikki-yakhmar
other accessories from last boss in each wing in black ring citadel
new weapons from toth amon.