SAMURAI AND RED MAGE RELICS

[Enkidoh]

I definitely think we'll see 'Joyeuse' as a potential relic for Red Mage, or at least as a potential Red Mage weapon, if not purely for the nostalgia factor of those who played Red Mage in FFXI.

Lore-wise, that's not possible though I'm afraid, as Joyeuse has already been referred to in-game as one of the three legendary swords wielded by the founding PLD members of Uldah's Sultansworn - the others being Durandal and Curtana (the latter naturally is the PLD relic the player gains), with the 2015 Little Ladies Day event showing that all three are virtually identical in appearance to each other, if the figurines in that event are to be believed (also presumably that means the Curtana-copy Solkzagyl wields in the PLD Job quests is either Joyeuse or Durandal):

Well-schooled Steward (when asking about the first row of dolls that depict three PLDs): "The first row displays life-size recreations of the three legendary Sultansworn known collectively as the first paladins. Of particular interest are the blades that they brandish."
Well-schooled Steward: "Three blades forged from the same steel, each one bestowed to the three great warriors who would attend the Royal House by the hand of Sasagan Ul Sisigan, first of his name and founder of our nation."
Well-schooled Steward: "Curtana, Joyeuse, Durandal... Eras have passed, monarchs have risen and fallen, but the legends of these blades-and the men who did wield them-live on to this very day."

So because of this, I doubt even PLD will ever see Joyeuse and Durandal I'm afraid, let alone as a RDM weapon, it will forever be 'lost' as part of the lore, or only wielded by a npc.

Also using the term 'relic' for RDM and SAM is somewhat redundant as they won't even have relic, which was for the original 1.0/ARR Jobs only - same as MCH, AST and DRK did not get relic either but anima weapons. It's highly likely then that RDM and SAM will instead only gain a weapon from the new elite weapon questline planned for Stormblood accordingly.