1. Original, not another remake
2. Moogles to return
3. Fantasy setting a'la FF9, FF6 etc
4. Chocobos, Cid, airship etc as normal
5. A pre-FFX style world map where you can actually explore it
6. Not a completely linear "interactive movie" like FFX (combine with 5)
7. Female lead role. Don't ask me why, it'd just be a nice change.
8. Voice acting, but none of these huge gaps between facial reaction and voice output.