Honestly, I’d say three episodes would work simply because there are three clear sections with a beginning, middle and end from a narrative perspective. Midgar itself works because it’s already paced like a pilot episode to a bigger thing already. It even has a final dungeon of its own in the form of the Shinra building. Ideally I’d want the second episode to end with Aerith’s death because that’s the second time the game really builds up the tension to a similar degree as the finale of the Midgar arc. After that it’s basically just a boss rush to the end, and starting the third game with Cloud disappearing would be refreshing.

But still, it’s hard to tell what else they’re gonna change. I’m hoping they’ll at least stick to one console generation though