The battle system by itself (assuming it's been tweaked for the better) would probably make this game worth playing, at least. But the original plot had painfully poor writing, and I don't have any higher expectations for this game. At least it looked like there was some more side games, though what little wandering the video showed seem to involve the same follow-the-line gameplay from 90% of FFXIII.
No Sazh is also highly disappointing. Lightning is good, but the only thing I liked about Snow was his music.