One of thhe few problems I had with this excelent game is Trance.
I liked it and it was usefull, but I was always dissapointing that the only character who actually got unique attacks for Trance was Zidane (and (SPOILER)Kuja if he counts) - all the others just got "updated" versions of their own skills - I think it would have been better to have Trance Skills for all characters - it would have been more fun that way, like how you get Limit Breaks and Overdrives.