So if they do three episodes, I think the first could end with the team sailing from Junon to Costa de Sol and fighting Jenova Birth. They could give us the entire first continent to explore in the post-game. What was world map could be full fledged explorable areas, like the swamp of the Midgar Zolom. They could hide some secret bosses, let us raise some chocobos, and the ship to Costa Del Sol could be expanded into the final dungeon.
Then Episode 2 could be Costa Del Sol to Sephiroth getting the Black Materia. VIIR-3 would start with playable Tifa escaping Junon and go to the end.
I’ve seen it suggested that they should stop Episode 1 at the end of Midgar, but it doesn’t make much sense for them to hang out around the city before or after saving Aerith and fleeing from Shinra for the post-game. It would also only give us like an hour with Red XIII, which would be a crime. I’m excited to see Midgar expanded, but 30-40 hours of it would probably bore me. I’d rather it be about the midway point of the first game.