What Mordor needs and i'm surprised that nobody has thought of it yet? Uruk Slave Masters.
They could use the Native American Chieftan Ability of going into a Trance to boost Orcs Attack Points, make them Fight Harder.
Change the Animations of the Slave Masters and Sounds from the Tantric Chanting of the Native Vanilla Models to Whipping Animations and Sounds?
They could be the Biggest/Strongest of the Uruk's, few in number and have the Chant Ability, only instead it's "Whip" with lots of "Don't you know that were at War!" and "Move along you Filthy Maggot!".
What you think?