A monk with a giant blade doesnt sound very monk at all tbh.
Theyre masters of their hands and feet. Not weapons.
And the history and lore doesnt align with each other either.
It really isnt part of the monk fantasy in wow.
Monks should not lose out on stuff that actually fits them so another classes fantasy can be forced upon it.
Blademaster belongs on a class known for its use of blades. Not on a class known for kicking and punching.
Also, im not sure what final fantasy has to do with this. Its a totally different game with no connection. What they do in their game is unrelated.