Beat it, 60-something hours, using cheap strategies to make the game easy (hey, it's how I play). Spoilers.
What is incredibly shocking to me is that the biggest disappointment of the game is... the plot! I don't think I'm spoiling too much to say that... well... not much happens. Villains show up, you beat them, the end. Your characters don't even have any idea they're going to confront Vayne until the very end.
Compare that to Kefka, who spends the whole length of the game burning castles, poisoning rivers, killing his fellow generals, and wearing stiletto heels; or Sephiroth, who haunts and dogs you every damn second; or even Seymour, whose silky smooth voice made you almost break your controller in hatred... Vayne pops up in a few cut scenes, then boom, you gotta beat him, he's so bad, then you beat him.
The greatest casualty of the abruptness of everything is Dr. Cid, though. BEST VOICE ACTING in the game... and such wasted talent, too. The guy is freaking awesome. Wish we could've seen more of him.