The Overseer merchant in PoK is missing Shaded Specie, which is the group currency for Night of Shadows. Since they put the previous expansion currency on the merchant during NoS and it only went up to Scarlett Marks (ToL), I'm assuming when LS launched, the Shaded Specie currency should have been added. So basically, one expansion currency back.
If only the raid vendor unlocked all his wares after the next expansion raids opened up. Could gear up a new toon solely on overseer tetras!
