Starting in Warlords of Draenor, you'll be able to change your weapon enchantments or hide them entirely via the Enchanter Building in your Garrison. This is really nothing but great news for those of us obsessed with transmog. Personally, every weapon I own will now get the level 60 Fiery Weapon Enchant. End of story, end of game. I just beat the World of Warcraft, thank you, Jonathan LeCraft.
.@HideEnchants Enchanter garrison building allows you to trade WoD enchants for the same effect with a different visual (including none).- Jonathan LeCraft (@TheCrafticus) July 24, 2014
There's no indication on how much this will cost, and LeCraft said a "maybe" when asked if Death Knight runes will be included in this feature.