Final Fantasy VII was the big one for Squaresoft, that's where they really hit into the household-name territory. After that, they had the money and whatnot to pour into the ol' visuals and stuff, and ever since they've just been making things on the name of the series rather than the quality of the game itself. Don't get me wrong, they're still great - but the storyline of FFVII was the last of it's kind, that was the last time they really put an interesting, deeper set of characters along with a story that could be rushed and slowed as you pleased - and you were making the decisions, you were the personality.
I don't know about you guys, but I think Cloud was the last main character where you could really have much control of the personality. I haven't played FFIX, but I can definitely say that Squall was mostly pre-decided in how he acted, and Tidus is pretty much completely pre-decided. The amount of times you get to choose what you say is decreasing, and that is only contributing more so to the fact that you're watching and not playing the character.
...still, so long as the story is interesting, I'll play. *bites his lip* >_>;;