I just think that, like it or not, these guys are professional athletes, and therefore they are role models to millions of people and children growing up. Thus, they're off ice behaviour is probably, almost more important than the behaviour they exhibit on it. If we place a team in Vegas, are we likely to see more stories about off ice behaviour? Can you imagine if the NFL had a team in Vegas?
All of these things are obviously subject to our own opinions, and are all projectables. These things may or may not happen at all, and a team there could be a success. Or it coiuld not, and could end up giving the league a bad name. Personally, I don;t think it's worth the risk, especially considering that the 3 biggest sports in the US do not have a franchise in Vegas. I would have thought that would be enough to prohibit the NHL from attempting something like this. Especially considering the vast failures they've had in small, non-hockey markets...