Company Information next week, not this ;\

[Chrees]

最終的に修理は、前述した「マテリアクラフトシステム（仮称）」と併せて、
バランスが取れるようになると考えています。

If Google Translate hasn't failed me (which it probably has), these "upgrades" to armor and/or weapons that were mentioned earlier in the thread are created using what's tentatively being called the "Materia Craft System" or something to that extent. The upgrades themselves would possibly be called "Manastone" or "Materia" based on this quote from another player:

マテリア･･･魔石･･･なんだか懐かしくほっこりした気分になりますね！

Very interesting indeed.