Essentially, both are about a system that corrupts and does not deserve virtue (the Carthaginian Council; the Padishah Emperor) and virtuous characters (Hamilcar; the Atreides) contrasted against non-virtuous ones (Hanno; the Harkonnens). Baron Harkonnen's anti-gravity implants are Hanno's luxurious slave litter, and his black goo bath is Hanno's cinnamon oil one. ;D
