I still don't see an argument that says we need Evans/Griffin more than SAR. You say that they're not overrated because you haven't heard anyone say that they are overrated. You don't see the fallacy in that statement? In 21 minutes, Griffin averaged 7.5 ppg and 6.5 rpg. Evans, in 23 minutes, averaged 9.3 rebs and 4.9 pnts. On face, we can see that they are both good rebounders and not the best scorers. Consider that in those limited minutes they are not facing starters and do not face serious competition, meaning that if they are put into a starters role their numbers will diminish. Also, playing limited minutes prevents them from serious fatigue, which is why per 48 minute stats are so flawed. These guys have shown potential, but they are still mostly young and unproven, and I certainly wouldn't say that they are ready for a starting role, especially on a team that is looking to climb back into contention. I would be happy to have them on the bench, however, in the capacity that I have mentioned.
You state that the Kings won't have a problem on offense, simply because the organization said so. Okay. And the Clippers said they will make the playoffs, so they don't have to make any moves to get better, right? And if Petrie says our offense is good enough, let's just unload all our offense, bring in defensive players, and we'll still magically score 100 per night.
You say JJ is irrelevent. I'm not saying that he's as good as Evans or Griffin, but the justifications you use for them apply equally to James. You say Evans had a bench role because he played on a deep bench (which somehow makes him instantly good...) but you ignore that James played on that very same bench. So, unless you look at the player individually, which you have not done, you're argument justifies giving JJ a fat contract.
So here's the bottom line: Sar has proven he can be an all-star caliber player, and a consistent one at that, logging big minutes. He can score, he can rebound, he can fit our offense. These other guys are unproven commodities and liable to break down over a long season after having to play 30+minutes per night, assuming you give them a starters job, as you seem to want to. Taking that unproven young kid who, even if he pans out, is just a rebounder and a rebounder alone, over a proven all-star player in Reef is just stupid.