If we are getting some sort of horizontal skill system, having some horizontal cosmetic options could be nice as well, and the least they could do for white mage would be allow you to choose between earth/wind/water or light/light/light animations. Maybe drop Stone II at level 16 so the Stone I animation can see actual content, and just adjust potencies. You have Stone 1 till level 54, Stone II till level 64, then you can pivot to Glare or Stone III at level 72, and finally Glare III or Stone IV at level 82, as an example.
Of course, actual gameplay would be appreciated with a new progression system as is the bigger focus of the thread, but why not both?