Any punishment would be fair. To pay players to intentionally harm another human being is inhumane. To me, putting it in an everyday situation, thats like me going up to my brother and saying, "Hey, I'll give you $20 if you break that cashier's leg." Just because football is played physically doesn't mean its okay to try and injure someone. Who you are on the field and what you do on the field represents who you are outside the game as a person, and if a little bit of money is enough motivation for you to try and injure someone, then whats to say that they wouldn't be motivated the same way in real life? I think the punishment is just right. Its highly unprofessional and unethical.