I've given the second race of mine, the Ooro, 4 arms and high mental abilities. They more commonly wear desert attire like robes, turbans, and veils, and use scimitars in battle. They have way higher medians for Focus and other mental capabilities, and praise values such as Wisdom and Law.
EDIT: Also made some new Dwarven crops. Cave agaric makes tasty Dwarven Spirits, but takes it's time to grow. Slime Mold grows quick but makes low-quality brew. Spice Moss is a slow-growing, aromatic crop that can either be ground into valuable spice or brewed into delicious Dwarven Liqueur.