I dislike the Awakening skill style in general since it puts so much emphasis on grinding, which is diverting gameplay from the main draw of the series, however Fates' personal skills is a stroke of genius to differentiate units and allow more situational skills without being useless and add to their character.
I'd like something like the Thracia/Path of Radiance style system combined with the above Fates feature. If they keep infinite weapon uses, it would be more consistent to use something more like Radiant Dawn where you can redistribute at will.