grats , don't let blizzard know this but , I hope in a few years we'll come full circle and some people wil be able to wear a legendary on every equip slot from all the expansions.
So far we've got ring cape and trinket + 2 equip slots from legion + weapons for some classes . The heart of Azeroth necklace seems to fulfill the epicness requirement even though it's supposed to be an artifact quality item