I want
- Not super-linear story progression. If this is FF13, I would be fine with something like this for FF15.
- At least an illusion of my choices affecting the story a tiny bit, for example through multiple endings. This makes for a lot of replayability. This is also nice when coupled with a new game plus feature.
- Plenty of sidequests available at most stages of the story's development (not everything crammed into the last chapter (Hi FF13)).
- A job system like in 5, 10-2 and 11. This means specific jobs that are changeable at any time, and a system that allows one job to borrow abilities from a different job (or several jobs).
- Slightly futuristic fantasy setting, or perhaps steampunk-like. Anything but "ye olde medieval fantasy".
- Fast-paced, balanced battle system. A quick-paced ATB-derivate is welcome.
- Even though I want a job based system, I still want characters to have a tiny bit of individual differences in battle. Nothing game-breaking though.