. . . . If you could loot Argonian skins and Khajit pelts in PvP and use those to craft items?

Perhaps they could be used for Necromancy items

Similarly, maybe Breton blood could be used for a sort of alchemy recipe, or Orc teeth required for adornments on crafted weapons to give them special bonuses, perhaps Bosmer hair to create a sweet magic bow.

How 'bout Nord guts for, oh idk