For people who have played Tales of Xillia
 

Does the game's OST feature progress in any of its tracks? Kind of like how in Tales of the Abyss, Karma was used as more than just an opening theme but also was a leitmotif in the game's soundtrack and a number of its pieces.

Is progress used at all in this way?

nope, progress just used in the opening...
I've played graces-f recently and knowing they make orchestra version of BoA's song in the credit really makes me upset. Lazy namco...