I get the feeling that there were no plans for a sequel when FFX was being made. That would explain (SPOILER)the end of Sin, Summonable Aeons, and Tidus' poignant exit from Spira. It's like trying to write a sequel to FFVI without Kefka or Espers. I think FFX ended on the perfect note and to produce a sequel after the fact was unneccessary.

In addition, as was previously noted, the characterization of the carryover FFX characters was generally disappointing. Rikku's silly to start with, but a gun-totin' pop star version of Yuna is not an improvement over the shy but strong-willed Summoner. The loss of (SPOILER)Auron is also acutely felt.

I found the new characters in FFX-2 a lot more successful, partly because I didn't carry any previous expectations of them. I thought Leblanc and her henchmen were great, as was Gippal and Balarai. Lenne and Shuyin provided a nice counterpoint to Yuna and Tidus.

There actually was a lot to like about the game, plot and characterization aside. The battle system, flexible jobs, mini-games were all enjoyable. I'm sure that isn't enough for a lot of people though.