Final fantasy goes in cycles, they're pretty predictable.

1. Duh, it's first, and very good for it's time.
2. Pale imitation storyline of above, only innovative new system.
3. Disappointment
4. Interesting system, nothing original story.
Mystic Quest. Something so different it shouldn't even be in the same series.
5. Same as 4.
6. Much improved story, nothing impressive system.
7. Incredible work, and also very good for it's time (and still)
Tactics. See mystic quest
8. See #2
9. See #3
10. See #4
11. See mystic quest
X-2. See #5
12. I'm just guessing that it will resemble #6
13. I have my fingers crossed, and it may even be the first on the PS3

See, it's all just a cycle. We're just in the lowest point of the cycle.