Square Enix spent years working on Final Fantasy XIII. The game was shown in prototype form at the E3 gaming expo in 2006, but was not finally released in Japan until December 2009.
According to the game's art director, Isamu Kamikokuryou, a substantial amount of these locations that were already running on actual development hardware ended up on the cutting room floor. How many locations? "More than enough to make another one [game]", says the art director.
For the sale of the finished product, he says, game volume and the entire work's game balance were taken into account for finished product. Square Enix was forced to make the difficult decision to cut these locations from the game.
Those assets are bound to find their way into other Square Enix titles.