Final Level: Sin
Why It Sucked: Some may call FF X the last great Final Fantasy, and they certainly wouldn't be far off. Yet the ending left so much to be desired that X became the first final fantasy to ever get a direct sequel. It actually made us give a damn about the romance between Tidus and Yuna, and then Tidus just disappears at the end. Or does he!? Ugh.
How We Would End It: Ambiguity is one thing, but we'd have liked more of a resolution than Yuna being sad and Tidus swimming away somewhere. It just needed some fleshing out. It probably would have been more poignant if Yuna actually had died during the final summoning.