Part 2 is now in Full Development

[Wolf Kanno]

I feel you're being too optimistic to believe that the ghosts are gone for good to be honest. That's some Grade A KH Bulltrout that I cannot fathom that Toriyama. Nomura, and Kitase are going to pass on. The fact is, they didn't really need to make a plot point out of changing the plot, so I feel it's likely a safe bet the ghosts will come back with a vengeance, especially with the foreshadowing of Rufus seeing them and the not-so-subtle hints that Aerith and Sephy are both aware of how the OG plot is suppose to go.

I feel that it is safe to say that while the order of events from the OG will remain the same. The details and general subtext of the narrative will be very different from the original.