Well, i'm pretty sure a lot of people will disagree with some of the stuff I'm posting, but oh well!
Battlesystem: i'm gonna be hard on this one! XII was the best FF battle system (and exploring game play), but I also like KH's a lot. What I want is a combo of both! Or rather, a even quickier to use system of XII, with the agility and style of Advent Children!
Gambits are ok, but i'd like there would be some sort of easy to activate combo attacsk, be it combo magic like CT, or characters unleashing special attacks at specific times, like KH2 triangle special action.
Airships: I know I'm asking too much, but I love the deep detailed world to walk trhough, but I also want a bird's eye view for the airship. I want to PILOT the airship, from X on, they've been just a pretty dull transportation, I don't eve use them except to go to places you can't reach by foot.
Chocobos: Chocobos too are geting a bit of useless. They'd be pretty usefull on XII, but the riding time is so short that it's only useful if you're in a rush and know the way, otherwise you may find yourself chocoboless right in the middle of a really dangerous moster area! And you'll die, because no way you'll be able to make it back if they can attack you.
Also, I think it would be cool if you could own/breed your chocobo again. And maybe use it in battle, as an ally or even better, a ride, like in FFT.
Moogle: The Moogle race on XII was ihad an interesting background, but if you ask me they look like creepy bunnies with pompoms and wings. I wished they'd look more like on the old games. They were cuter.
Races: Speaking of races, FF is starting to look more like
Star Wars than FF. I wish that'd be less weird races and more HUMAN races!! I don't wanna get too ethnical, but Barret was the single black character in the whole series!! Old Dalan had an interesting middle east look (made me think of Indiana Jones movies) But Vaan (and almost all 3D protagonists!) is milky white blonde! Seriously, HE LIVES ON THE DESERT!!!
I wish they would vary the humans instead of creating a bunch of aliens... If they wanna show difference between cultures in their world, they can do that with humans. To take examples from our world:
- Japan was closed to foreigners for over 100 years (Tokugawa Bakufu) = Esthar
- Whole nations were dedicated to war, like Rome and Sparta = Galbadia
- Native americans lived close to nature = shamans
etc.
Minigames: Like the ones in VII. It would be cool if there were a place to play them all, but I'm talking about IN-GAME minigames, like the biker chase after you scape Shin Ra HQ, or snowboarding to Great Crater. Puzzle are okay too, as long as they're not
Myst-like!
Summons: It would be cool if they were part of the main story, but if not they still should have a side-story explaining them. And above all, they must be COOL and BADASS!!!
They don't have to kill bosses with a blow, but they must be strong enough to match them, and not be killed by normal monsters with a blow like the ones in FFXII. They don't need to be the same as ever (Shiva, Ifrit, etc.) either, but must live up to the level of their famous predecessors
Sidequests: The more the better, and XII was good enough on that aspect. Maybe they could use PlayStation Network to add new sidequests afterwards.
Cities: Cities are getting enormeous visually (they're already look like gay versions of Blade Runner! XD), and althoug I find them very cool, they're are actually smaller than before, there are really places to visit on them. And there are fewer towns too. There's like 2 cities and 3 or 4 vilages, that actually are bigger than the cities in depht and realism)...
Storyline and freedom: Surely one of the aspects that IS indeed going downhill. Either it's a too linear game like X, or one with so much sidequests and sucha a WEAK underdevelopted story like XII. It should have XII freedom, but with a story that even not necessarely linear, must be deep and strong enough to drive you to keep foward, beserkly!
And I do think the more cutscenes the better, even if lenghy (but hopefully not as lenghy as Xenosaga Ep. I), as long as they tell the story well and developt the
characters (another weaking point), but I do think that nowdays, there's no more need for FMV. They're pretty, yeah, but so should be the in-game graphics. Using in-game graphics prevent that shock that often comes from the change between FMV and gaming (something that's getting me really worried about FFXIII trailers, they're practly just FMV, it's like I'm watching the trailer of a movie instead of a game!). I think
Metal Gear Solid series has proved that in-game cutscenes can look pretty good!
And that if the story is really good, it doesn't matter how long they are!! That said, it's very important that the cutscenes don't surpass the gaming time in lengh, like Xenosaga!

With all that and MORE, they could make my dream Final Fantasy!!