Not sure if Nier is big enough to overshadow FF16. Maybe Verum Rex (which takes stuff from FF Versus 13, a game a lot of people still think often).Well, we can (probably) rest assured the rumored upcoming PS exclusive is unlikely to be the next KH game, according to Jordan Middler (though admittedly I’m struggling to find the primary source for this):
Rumor: Final Fantasy 16 Delayed Square Enix's Next PlayStation Exclusive Reveal - PlayStation LifeStyleThe next PlayStation Exclusive Square Enix game was delayed to wait for FF16, and will not be a Kingdom Hearts or Dragon Quest title.www.playstationlifestyle.net
“Square Enix reportedly delayed the announcement of its next PlayStation console exclusive title in order to wait for the release of Final Fantasy 16. The rumor is in line with recent statements from the Japanese developer, which has expressed interest in developing more titles exclusive to PlayStation consoles. Notably, the upcoming PlayStation exclusive will not be a new Kingdom Hearts, nor a new Final Fantasy or Dragon Quest.“
What the heck could it be though I’m going to optimistically cross my fingers for new NieR
I heard rumours about Chrono Cross remaster, but that's not big enough either. A Chrono Trigger remake however...