Given the non-participation of current NHL players, the rosters for all the teams will consist of former NHL players, players who spent most of their careers in the minors or foreign leagues and a sprinkling of good young amateurs.
It's not a recipe for a must-watch tournament. But who knows? Maybe these guys who never made it big will relish their moment in the spotlight and play some great hockey (though I wouldn't bet on it). There is also the 14 hour time difference that is not good for broadcasting live games when people are likely to be watching, so one wonders whether anyone will actually see the games live on TV. Also, South Korea is not exactly a hockey-mad country so one wonders who will bother to attend the games in person.
https://fivethirtyeight.com/features/nhl-players-arent-at-the-olympics-so-who-are-these-guys/