it stands to reason that legendary items are legendary for a reason. there meant to be few and far between to see them all over the place would then not make them legendary. if you want to add them as drops then they need to drop from legendary encounters that are rarely seen and each encounter drops randomly one random legendary item from all items types. thus making them legendary. happy hunting for weeks to months just to obtain one your class cant even use. thus making the legendary status of the legendary items justly named.