In patch 1.11, the Dire Maul Librams will no longer be a requirement for the Zul’Gurub enchantments. Instead, a new item drop from either Bloodlord Mandokir or Jin’do the Hexxer, along with the class appropriate Voodoo doll will be all that is necessary, making these enchants much more accessible to players.
Blizzard plans to incorporate additional use for the Librams, but the specifics are yet to be determined.