Having played Final Fantasy games since the very first, I honestly am not really that enthusiastic about #13 coming up. Although I enjoyed #7, it was very predictable in certain places, a trend that's gotten worse with subsequent games. #12 felt a little refreshing, in that it introduced a new exploration//combat system & a slightly less-predictable story, but even that one I got bored with about half-way through. All of the latter games, however, have had this silly little mini-game for leveling-up your characters - little games that are fun for the first few minutes, but really get annoying when you're trying to level-up your characters in a specific way.
I guess I just prefer RPG's more open-ended style gameplay, like Morrowind/Oblivion, the Fallout series, Baldur's Gate/Shadows of Amn, or Mass Effect just to name a few.