Actually, I think there are plenty of players who come close to peaking in the first 3-4 years of their careers. Here are some comparable undersized big men, or guys who had similar weight questions, who were also very highly skilled (I left out complete busts like Tractor Traylor).
Some examples:
Oliver Miller peaked at age 25
Antoine Walker peaked at age 24-25
Corliss Williamson's best year was at age 24
Kenny Thomas peaked right around 24 (stayed about the same until 28 before falling off a cliff)
Sean May peaked at age 22
Michael Sweetney had a couple decent seasons at age 22 and 23 that have compared to Davis' before he disappeared.
Danny Fortson had his best year (by far) at age 24.
Now, Davis may very well be different from all of these guys. But the history is there. Undersized big men rarely get better (or at least more productive) as they get older than 24 or 25...and if they have issues with weight, they often wash out of the league shortly after that age.
And that is not to say they don't refine their skills. Generally, they would get better at other parts of their game, but they would also generally be regressing from an athletic standpoint, making it harder for them to actually become more productive. They are essentially just replacing one skill with another one.
Well, you obviously took the time to look for examples and I have to respect that, but, again, I totally disagree that Baby has reached his peak or that say, 'most' players reach their peak at age 24 or 25. My point is that Baby is critically important to us winning the Championship and that I think he's worth 8 million a year.
Here is what I don't understand, what is the $8 million per year based on?
I absolutely agree that he is crucial to winning a championship, but the price is set by the market. And, even looking at the market under the current CBA, I am not sure how he would be in that range.
Looking at some comparables over the last few years:
Craig Smith 2.3 million per year
Brandon Bass 4 million per year
Hakim Warrick ~4.5 million per year
Channing Frye ~6 million per year
Antonio McDyess ~5 million per year
Matt Bonner ~3.5 million per year
Reggie Evans 5 million per year (although I think the AAV was lower)
Amir Johnson ~6 million per year
Udonis Haslem ~4 million per year
Drew Gooden ~6 million per year
Ronny Turiaf ~4 million per year
Nick Collison ~4.8 million per year
Ryan Gomes 4 million per year
Jason Maxiell ~5 million per year
Chris Andersen ~5 million per year
So, unless you think he is on the same level as someone like Millsap (who is right around $8 million per year), I don't see it.
And just as a comparison, here are Millsap and Davis' last 3 seasons:
Millsap: (ages 23, 24, 25)
2008-09 13.5 points, 8.6 rebounds, 1 block in 30 minutes
2009-10 11.6 points, 6.8 rebounds, 1.2 blocks in 28 minutes
2010-11 17.2 points, 7.8 rebounds, 0.9 blocks in 34 minutes
Davis: (ages 23, 24, 25)
2008-09 7.0 points, 4.0 rebounds, 0.3 blocks in 22 minutes
2009-10 6.3 points, 3.8 rebounds, 0.3 blocks in 17 minutes
2010-11 11.8 points, 5.6 rebounds, 0.4 blocks in 29 minutes
So, between the lower production, and the list I posted earlier showing that guys like Davis don't necessarily get better after the age of 25, I find it hard to believe that any owner would open his wallet for anything above the MLE for him based on contracts given to comparable players. While GMs love playoff experience, it is not going to be worth an extra $3 million a year.