It sounds outlandish. And I know Blizzard is unlikely to do it because it's going to take more work.
But honestly, it's the most fitting.
No Human/Dwarf(/Gnome) is going to want to wield an Elune-inspired item and no Night-Elf (or Worgen*) is going to want to wield another Exodar-Life Staff or something.
*Sure Worgen were likely followers of the Church of Light when they were humans, but with their rekindling in Darnassus, Worgen Druids, Worgen Sentinels (see Feathermoon Stronghold), entirely plausible Worgen Priests now associate with Elune.
And in the same mindset, those who follow the Forgotten Shadow absolutely don't want anything involving the Light (or Elune).
P.S. Goblin Artifact should be a staff with a glitzed out dollar-sign ($) at the top of it. The Church of Greed and Money belongs to all.