Breakouts are a huge deal...speed through the neutral zone is affected by that, bad luck has been involved (i.e.: Detroit), and guys not producing as we've been accustomed to. All have lead to this down turn. A Lack of discipline has also been a huge contributor. The Kings play a wear down style but they can't wear teams down when their best players have to be hard minutes killing more minor penalties than most other teams have to.
Look: I've always likened the Kings situation to the Lakers situation circa the late 90's. They had a young up and coming team (with Shaq & Kobe) learning how to play with an even-tempered X's and O's "teaching" coach named Del Harris. These players learned how to be professionals with Del, but despite having been to the NBA Finals once (with HOU) Del wasn't a "championship" coach. Del's fired after a sub-par start in 1998. The next season Phil is hired, brings in a boring uneventful but proven system (triangle) and the Lakers go to 7 NBA Finals and win 5 of them. The system didn't win it for them... their execution of the system, with the great veteran talent they had are what won it.
Same for the Kings...Terry Murray another even tempered X's and O's coach, teaches them about defensive hockey and the "value of checking", gets them to a certain point, then when the message grew stale as it did with Del Harris and the Lakers, Lombardi brings in a more aggressive system based more on breakouts and puck possession and clogging up the neutral zone without compromising defense...they bring in some offense (Carter) and the rest is history.
The Triangle is as old as basketball but when great players buy into an old but proven system...it doesn't matter, you'll win way more than you lose and win championships.
Same with the way the Kings play. Their system is older than Bobby Orr, and they won a championship with these guys, so it's proven. They just aren't executing. It's possible they may not have enough of the right talent to execute it properly, (although they did get off to the best start in franchise history hard as it might be to believe right now) and it's possible some guys may not be buying in right now, but while they're a boring hard team to watch play even when they win, I'm done criticizing the system. I've seen it work to a tee. I do think some talent adjustments need to be made and some guys need to step up or be sent out, but they need to execute better, that's for sure.