Having played hockey when I was younger and having gotten into a couple of fights myself I don't think fighting is antiquated or even all that dangerous especially relative to other sports or even other facets of hockey (you're far more likely to get injured on a bad check than during a fight, I would think). Fighting serves more as a way to send a message or stand up for teammates if nothing else and the outcome is often both guys falling over after trading a few weak blows. Overall, it's a unique part of the sport that is part spectacle, part tradition that I think does generally more for the sport than it takes away especially when you consider that some people get into watching hockey specifically because fighting is 'allowed'. Yeah, I don't see the reason to crack down it or incentivize it either, just let it happen and try to minimize injuries within that framework, even though like I mentioned before I don't see it as being really all that dangerous.