I do think Dallas is relevant, because let's just say, hypothetically speaking, Kevin takes it up one more notch and next year becomes a 30 ppg scorer who can create his own shot. Given how he is playing right now and the potential he shows, I don't think that is out of the realm of possibility -- maybe a reach, but possible. It's certainly better odds than taking a dive, hoping for a high pick, hoping a good player falls to you, hoping that player isn't a bust, hoping that player develops into star, etc. etc. etc. Then, if you strike out in that draft, you wait for the next draft, and the next one, and the next one, and the next one. I'll take Kevin, thank you.
If Kevin does make the leap, the Kings could already have their Dirk, and a fantastic sidekick in Artest. So the comparison to the Dallas of two years ago is valid, in my opinion. A team that's good but still adding around the edges, with a player who is still improving. (People point to the roster changes and Avery, but the Mavs weren't true contenders until Dirk improved his defense and developed some go-to moves.) Then it's a matter of some changes around the edges (interior presence, obviously) and the Kings could be much closer to a serious team. Two superstars, one a killer on offense one a killer on defense, surrounded by some other talented players.
So I don't think it makes sense, yet, to start over, unless you want to waste Ron's prime and Kevin's possible emergence on a highly uncertain rebuilding project. Your plan of trading everyone on the roster for expiring contracts and picks (while not even realistic to begin with -- no one is giving away picks in this draft, nor are they jumping at offering expirings for guys like Kenny) puts the Kings at least two three years from even being serious again, two or three years of Ron's prime wasted. Not to mention the risk to Ron's sanity to be on a losing team.
I'm not saying Kevin WILL become a superstar, and yeah, he could come back to earth. I just think you might have an unrealistic view of the rebuilding process, something that is a total crapshoot with uncertain success. Teams go to the lottery in order to luck into someone like Kevin. Sure, the Kings can double down and go for another Kevin at a different position, but there are other ways of landing talent.
Now, trades to get the Kings inside presence and possibly a more defensive minded point guard? Sure, if it's the right trade. I can talk myself into Mo Williams and Darko if you let Bibby walk. But taking an a-bomb to the roster just doesn't make sense to me, unless you want to trade Ron as well or watch him implode. Better to be patient, see what you have in Kevin, keep adding through free agency, and address trades on a case by case basis.