I thought about that, but those three have been thrown into CoM and Re:coded so they are a part of Destiny Island’s history, so omitting them from a retelling would be odd (as opposed to not including FF characters in an upcoming story).That is if FF characters will even be in it....
Square went to efforts to make worlds in KH3 be populated, so I hope that would be reflected in this show. But yeah, depends if Disney is like “but we don’t want Final Fantasy in our Disney show”