What aspects of all the Final Fantasy games in the series would you include to create the ultimate Final Fantasy game.

Here are three things I would include:

Job Classes: The ability to pick a certain career path, and gain new job promotions within that class. Going way back to the first final fantasy...The Thief would get promoted to a Ninja. Of course there would be more options for that particular class but you should get the jist of where I'm going with this.

Materia: There may have been confusion with materia combinations in FFVII, but I'm sure those kind of kinks can be fixed with a revitalized materia system. The magic abilities you gain do not come to early where it kills gameplay, or too late where the new spells are useless.

Exploration: What is wrong with the old formula from the past games? You start on foot or ride a chocobo, then gain a boat or buggy, followed by an airship. The freedom to explore has always been the best part to the classic Final Fantasies, it's a shame they steered to a more linear game like XIII.