I never got to play for myself, but I always watched my older sister play FFX throughout my childhood. Talking to her about it now, she said she'd been working on 100% on her Vita for a while (but stopped during certain points in time for P5 and for work) and needs only 4 more trophies, specifically the ones about filling everyone's sphere grids, defeating Penance, and Chocobo Master (which she's just feeling too lazy to do currently).
She's determined to 100% this game before she dies. (笑)