What if anyone can be a Nika
As we know, Bonneyโs fruit gives her the power to access alternate futures. She can become muscular or gigantic. All of which are real possible futures in One Piece(see: Kaido and BM for gigantic humans).
So far, Bonney has only copied the Nika fruit. She hasnโt copied any other ability. Not even Kumaโs, which would arguably be more useful than the Nika fruit.
What if the reason for this is that anybody could theoretically be a Nika, regardless of whether or not they have the Nika fruit.
The fruit is called the hito hito no mi model: Nika. Nika is a type of human and in the unawakened form, it is virtually identical to a normal person. So much so that unlike other zoans, Luffy doesnโt have distinct human, hybrid, and animal forms.
Perhaps being a Nika is the OP equivalent to being a buddha. It is a state of enlightenment that only a few individuals can access. By eating the Nika fruit, Luffy gains a shortcut to awakening Nika powers. But anyone could get them if they are mentally free enough.
The reason why the Nika fruit is so feared by the WG, why they censor even the name of Nika, is because they fear not only the rise of one who awakens the Nika fruit, but others who naturally awaken their innate Nika abilities.