A pro sports team in Vegas is a really big deal. The NBA has been eyeing that market for ages but is hesitant as long as the sports books are right there. Obviously you can bet on the NBA anywhere, but I think it's an appearance thing.
That said, it's a dumb idea to put a hockey team in Vegas.
Here's how they should do the NHL. One conference should be the Canada Conference (with divisions named for great Canadian players). One conference should be the US Conference (with divisions named for great US players). All the US teams should play in cold-weather cities, although I'd allow LA and maybe Anaheim as there are established fanbases. And then in the playoffs you get teams fighting to be the Canada champ, and the US champ, and then they do battle for the pride of the nation. You'd need a hard cap so the smaller Canadian markets could compete with the Chicagos, LAs, and Torontos, but every year it's a must-see event.
It's so smart that it will never happen. There's too much money in the bigger American markets, nevermind that NHL playoff ratings are dismal.