"I'm actually rather interested to see if Yoko-san [would] be interested in working on a Final Fantasy title, featuring the similar strangeness," said Saito when asked why Taro's work features outcasts as protagonists.
Taro for his part added, "I'm hoping for a big budget if I do work on it," in regards to any potential Final Fantasy game directed by him.
As anybody who follows Taro on the media circuit knows, the director says he will work on almost anything as long as they pay him for it. So getting him to work on a Final Fantasy game feels like just a matter of price really.
In actuality, it's unclear if Taro will work on a Final Fantasy game in earnest. Nier: Automata surpassed sales expectations to the point where Square-Enix now considers it a viable franchise for the company. Having worked on the Nier/Drakengard stories for a bulk of his career, even through stage and novel spinoffs, it's up-in-the-air if Taro will choose a new franchise as his next project.
On the other hand, it really just might be a matter of how much money Square Enix offers Taro to work on a Final Fantasy game.