We can improve our elemental resistances in this game, but only through using Materias(which nobody will prioritize). Why not have a gatherer class, that can gather elemental spirits to be used to imbue into our armors, to strengthen our resistances against used element? The higher the level of the class, the stronger the spirits the Enchanters can gather. It will be a great use of elemental resistance. But for the sake of mages, it's to be reduced or neutralized on PVP, but gives players a neat defensive boost on PVE.