Materia in this game is overrated. Full V melds barely give 1.5% dps increase for a dps job. It matters for world first groups, but for people casually running expert dungeons or story mode Alexander it's not important (they can, for example, increase their dps by 30% just by doing optimal rotations and they are not doing it either). So why they should care about 1.5% when they don't care about 30%?