Hate to be bearer of reality but there is only three ways teams normally get better. The First getting a top lottery pick that pans out the examples of poor to middling teams that have vastly improved with in a couple years of bringing in a top 5 pick are too numerous to list here but the short list would include, Cleveland (Lebron), Denver (Mello), Miami (Wade), Lakers (Kobe), Boston (Bird), Chicago (Jordan) and so forth.
The second way teams improve is through singing TOP Free Agents, This list gets a little hazy but again looking at the Lakers signing of Shack, Pheonix singing of Nash, NJ's one good year after heaping tons of cash on Kidd. Again plenty of other examples abound.
The third and actaully LEAST common way teams GREATLY improve is through trades. This is where many Kings Fans become delusional thanks in part to fact that Petrie actually managed to trade tallent for improved tallent several times and built a contending team that way ONCE. But in general trades result in marginal improvements, shifts of tallent (trading a shooter for a rebounded) or cleared salary. It is actually pretty rare when you trade an aging star near retirement for a young 20-10-8 guy who has issues. The idea that the Kings can trade some expiring contracts and a bench player for a serious big man or a top back up pg is the kind of Grail quest that fans can never let go of.
Reality check: The days of the Kings being one or two players away from the championship are gone. The Fact that they are still in the play offs as 8-5 seeds makes it WORSE if what you want to do is win a Championship. If for not other reason than because it limits the avenues for VAST improvement by one third. As is the Kings have only two starters that are ranked as a top 5 in their position and one is the one uber-softie most of the posters on this board would like to see go -Brad. The other is the most unstable player in the NBA since Denis Rodman, which pretty much makes him #2 in the history of the NBA (Rodman fans might argue that Artest actually leads this dubious category given number of games missed due to suspension and number of suspensions) Our Bench is made up of one undersized, over paid PF who HATES being on the bench (unless of course Muss actaully Starts Kenny which is WORSE news) a couple of almost unplayable vets and some kids only one of who has ever seen any real NBA play time. I’m glad folks are optimistic about the new kids and I do wish them the best but folks I'd say it's a safe bet that the future of this franchise is not Williams, or Admundson. I'd love to be wrong but we are NOT talking about the kind of plan ANY GM would call Plan "A" here. The Truth is the Kings so far have taken a nice step back this season, there are too many question marks to be sure how bad it was and IF improved play by vets like Bibby, Miller, SAR and Kevin will help off set it by much. So how can this team be improved next season? By a 12th pick? By a player signed for Vet's min or the LLE? Or will most of the folks who oppose clearing the decks THIS season be advocating trading Hart, Price, Kenny and who ever for KG once again?
Truth is Kiki did it right when he inherited the dying Nuggs. He knew that relatively talented group of guys were NOT going to contend so he got rid as much contract as he could and in process positioned himself excellently in a GREAT draft year. (Remember they HAD to take Mello at number 2!) Now we can argue about the FA's he picked up and especially what he paid for them (Boozer and K-Mart) but given those bad signing we can also say that Denver COULD have rocketed to number one contenders in ONE off season. See Miami for similar moves (helped by Shack's trade demand).
Bottom Line: Next years draft is good, might even be great. Next year's FA offerings will be very good. But to be players in THAT game the Kings have to clear the books THIS season. Muddling through hoping for a number 5 or 6 seed and TRYING to get out of the first round then picking up 12-19 pick in draft and being at or near the cap just perpetuates the cycle of Fan Abuse.
As much as I agree with the contents, for each of the above example, numerous counter examples exist. Let's consider some.
Drafts
Sure, some teams improved dramatically after drafting a top player. While others have continued to live in lottery land for long time.
Chicago: 1st draft pick in 99 (Brand), 4th, 7th in 2000 (Marcus Fizer, Chris Mihm: Yikes, even in a weak draft), 4th (Eddy Curry) in 2001, 2nd (Jay Will) in 2002, 7th (Kirk Hinrich) in 2003, 3rd, 7th (Ben Gordon, Loul Deng) in 2004.
Toronto: 4th in 98 (Jamison, converted to Vinsanity), 5th and 12th (Jon Bender and some guy never heard of) in 99, 4th (Bosh) in 2003, 8th (Rafael A.) in 2004, 7th (Charlie V.) in 2005 and 1st in 2006. They shall be lucky to make the playoffs in a weak conference.
Houston: 7th (Joel P.) in 2000, 13th, 18th and 23rd in 2001 (traded for Eddie Griffin), 1st in 2002 (Yao). They also got McGrady on the cheap. However, injuries have been big for them.
Wizards: 4th in 95 (Rasheed), 7th in 99 (Rip), 1st in 2001 (Kwame), 11th in 2002 (Jared Jeffries), 10th in 2003 (Jarvis Hayes)
Clippers, Warriors. Examples could go on.
Even in a deep draft (as next year's is projected to be), chances of getting a franchise level players are remote beyond no. 4 or 5 (one can get lucky like Suns with Amare at 9, but that is an exception though). We shall need to really suck to have a shot at that, and that can happen only if we trade away most of our guys (Other teams need to be willing to take our guys and give us draft picks/expiring contracts)
Cap space: Most top free agents sign with their team. Teams with cap, particularly rebuilding teams, usually overpay for second tier guys, and then go right back on the bubble of making playoffs, or not even that (Arenas, Joe Johnson). Rarely a top free agent, dissatisfied with the current team might decide to change, but even they usually want a sign and trade. For that again, we need assets.
Bottomline: If we want to rebuild, this is probably the best year, since next year's draft and free agent class is good. For us to have a decent shot at a top pick, we shall need to suck, and for that, we shall need to trade most of our vets for expiring contracts/draft picks. Even if Petrie manages to do that, this approach is too risky. We might have a better chance hoping one or more of our young guys (Kevin, Cisco, Douby) develop into good (hopefully great) players. Of course, if during the current season, KG gets dissatisfied and demands a trade, it shall help if we can pull it off.

Kenny, Corliss, Potatoe, Hart and Price are not going to cut it though. We shall definitely to part with some productive vets and young guns.