I'm really not sure how you follow Automata.
Mechanically and technically sure, there's lots of space for improvement, but its a remarkably complete story and Its a hard one to top for sheer conceptual ambition.
Most of all I'm not sure if Yoko can pull off the same surprises a third time around, because the truth is, he lifted a lot of stuff from the 2010 Nier.
Given his big thing is surprising the player, I'd suspect he might follow up indirectly somehow, like Nier span off from the first Drakengard.