I really like how in your inventory the text for the photon arts and techniques that you've already learned or have at a higher level appear grey. At a glance this provides really good negative feedback allowing for swifter item management.
Unfortunately this makes the persistently white text of disc drops out on the field that much more glaring. I feel like this same kind of system would really streamline the looting experience, so if I were to pass by a clump of disc drops it would be nice if the ones I either have learned or have a higher level for would appear grey as they do in my inventory. Thank you!