Funny thing with the concept of the "haki bloom", ever since its introduction, it has only served to give the protagonist(and his allies) a power up. Did Oden's haki bloom against kaido? Nope. Did Doffy's haki bloom when he was getting his ass kicked? Nope. The only people who have ever gotten haki blooms are 1) Luffy and 2) people allied with Luffy.
Personally, I feel like if this doesn't change, it would just be shitty writing. Because then the haki bloom exists solely as a deus ex machina. I think at least once in the series, Oda will give a villain a haki bloom. As for whom it would be? I'm willing to bet it would be blackbeard. Blackbeard is the only villain who's grown alongside Luffy. He started out as a no name on whitebeard's crew, became a shichibukai, and then killed whitebeard and took his seat as emperor.
But as of now, he only has a 2.2 billion berry bounty, which isn't much given that Luffy is already at 1.5 and we know that will skyrocket once he beats kaido. Furthermore, with 3 types of advanced haki, I can't help but doubt the threat of blackbeard. With ACoC+ACoA, Luffy can create haki barriers that allow him to fight without making contact. This basically negates the most powerful ability of the yami yami no mi and would easily allow him to defend against the gura gura no mi as well(something the admirals were doing without ACoC).
Blackbeard needs a power up to make himself a threat again and some form of a haki bloom might just be the thing that does it. We know that Teach has a unique body that allows him to have insane stamina, eat multiple devil fruits, and not sleep. Could this unique body perhaps give Teach access to unique haki abilities? I think this is a very real possibility.
Personally, I feel like if this doesn't change, it would just be shitty writing. Because then the haki bloom exists solely as a deus ex machina. I think at least once in the series, Oda will give a villain a haki bloom. As for whom it would be? I'm willing to bet it would be blackbeard. Blackbeard is the only villain who's grown alongside Luffy. He started out as a no name on whitebeard's crew, became a shichibukai, and then killed whitebeard and took his seat as emperor.
But as of now, he only has a 2.2 billion berry bounty, which isn't much given that Luffy is already at 1.5 and we know that will skyrocket once he beats kaido. Furthermore, with 3 types of advanced haki, I can't help but doubt the threat of blackbeard. With ACoC+ACoA, Luffy can create haki barriers that allow him to fight without making contact. This basically negates the most powerful ability of the yami yami no mi and would easily allow him to defend against the gura gura no mi as well(something the admirals were doing without ACoC).
Blackbeard needs a power up to make himself a threat again and some form of a haki bloom might just be the thing that does it. We know that Teach has a unique body that allows him to have insane stamina, eat multiple devil fruits, and not sleep. Could this unique body perhaps give Teach access to unique haki abilities? I think this is a very real possibility.
