A prequel to X would be great as a movie imo. Retelling the game would be predictable, and a sequel would have very little to work with, but a prequel, like another summoners pilgrimage, might be fairly decent
i like that idea, i think a prequel with braska's journey with auron and jecht might work well. With it ending how yuna and kimahri met and her meeting wakka and lulu in besaid when her farther brought the calm, and auron forefilling his promise by going to zanarkand to watch over tidus.