It is premature to call Vegas a "model" of anything yet. But the one thing Vegas is showing tentatively is that having a lineup filled with all second and third line players can give you success in the regular season. Assuming they have a strong performance in the playoffs and don't sink next season (which could happen), Vegas could dispel the idea that you need an elite no. 1 center, defenseman, and goalie to even have a shot at the cup.
I disagree though that the Kings have no shot at being a contender with Kopitar, Doughty and company. I think if we stay the course and keep drafting our number 1 picks, we will slowly infuse the supporting cast necessary for this team to be successful. We are already seeing the benefits of younger players coming into our lineup (Kempe, Iafallo, Amadio, Brodzinkski), and next year we will likely see Vilardi entering our top 6. The Kings could turn things around in 2 years, and I don't see Kopitar and Doughty falling off the map during that time. The key will be getting Kopitar a sniper on his wing. Iafallo has been good this season, but he is more suited in the bottom 6. I think we are fine on defense, but it would be nice to get Voynov back.
Another issue is whether Stevens is the right coach. This team seems to have no identity this year, which is concerning. I can't say who would be a better replacement or what options are available, but something to think about.