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Light steel warfan = Light exotic weapon, 1d3/18-20 slashing and piercing or 1d3/×3 bludgeoning, +2 shield bonus (stacks with shield or another warfan), 5 gp, 2 lbs
Heavy steel warfan = One-handed exotic weapon, 1d4/18-20 slashing and piercing or 1d4/×3 bludgeoning, +2 shield bonus (stacks with shield or another warfan), 10 gp, 4 lbs
Great steel warfan (just because) = Two-handed exotic weapon, 1d6/18-20 slashing and piercing or 1d6/×3 bludgeoning, +2 shield bonus, 20 gp, 8 lbs
Giving everyone a bonus feat, bonus skill points, and an adaptable favored class is going to be much simpler than arbitrarily assigning racial stat adjustments and racial abilities for every kind of animal-eared species out there. Plus, the human racial traits are the most optimal and benefit you no matter what your class is.