Am I the only to interpret his question as leveling the actual Enhance Material.. @_@?



Like leveling that ^
Because if that's the case, from what I know it's not even worth leveling it at all.. using raw materials gives much more than if you were to use those materials to upgrade one material. I haven't seriously tested it further but I did briefly check the different XP rates and figured it wasn't worth it to experiment with it more.