We've gotten all the Hero costumes from the ESO cinematics, and I think ESO's art quality has progressed enough that Mannimarco's cinematic costume should be released too. It's such a beautiful costume I would pay a king's ransom to get and wear all the time. In my opinion much better looking than the current Manni costume we have. But because of the similarity, the cinematic costume could always be given a different name, like "King of Worms".
I really think now is a great time to add it to the game given how detailed newer motifs/costumes look, which are on par with the level of detail needed for the cinematic version of Mannimarco's costume. Still crossing my fingers this will happen one day