Mist Continent to Outer Continent for part one. They’ll beef up the escape sequence in Fossil Roo as the end of the first game.
They’ll add a bunch of filler and make Terra its own game.
Part three will be the endgame + the optional open world stuff before the endgame.
They’ll fit a part four by carving something else up too.
It’ll be a shame, too, since FF9 has a fun story and characters.
The Spirit and The Mouse is free on Epic Games right now. I’ve been enjoying it - gentle, cute game where you play as a little electric mouse in a french village trying to help it’s citizens. Rough around the edges with a lot of heart.