Copy paste from an EU thread, perhaps it wont be overlooked here 
Hey all, and happy new year !
I was wondering why this tabard was never put into the game, as it’s the only tabard from a season, since PvP tabards were implemented that hasn’t been put in. Guess the devs forgot about it.?
Would it be possible to introduce it, perhaps like the Glorious Tyranny illusion and put a requirement of Duelist or Hero of the Horde/Alliance in that season (12)?
All the best.-
Indeed, must be an oversight from their side, and a matter that could be solved by a dev within 10 mins.
There has been TONS of tabards since this, that I can’t believe they don’t focus on making this. Everytime I see a new Timewalking tabard or similar, I think “Why was the time not used to make the missing PvP tabards instead”
Just make the same requirement as the old PvP illusions, Duelist or Hero of the Horde/Alliance in said season.
As far as I’m aware, the 7.3 ‘fixes’ also skipped on S12 for the redemption of the MoP red PvP enchant.
Sadly so, yes..
On the bright side, Blizz can still make up for it ..
The old hotfix from 2017:
Under “Player versus Player” it says:
“Enchanter’s Illusion - Glorious Tyranny is now available to purchase from Prideful Gladiator vendors, for characters who earned Duelist: Season 14 or Duelist: Season 15.”
Just rewrite that sentence, and make it accessible for season 12 and 13 as well, as we earned the corresponding enchant..
Justice will only be achieved when it (edit for claeity: Meaning the MoP red PvP enchant) is redeemable (as a weapon illusion) by the players who qualified originally: 2200+ rating in any bracket, seasons 12-15