One thing that does stick out like a sore thumb is that he's 6'11" 270 lbs...and shoots 39% from the field. Granted, it's very early in the season, but wow. As I've stated in another thread, he's such a great finisher but currently takes what are very low-percentage mid-range J's, and that's screwing up his offensive efficiency badly. Also massively turnover prone with overdoing the ballhandling, even if it's nice to see it in display at times. And foul prone. He's showing tons of warts, and while the mid-range shot could be most correctable given what he did in college the rest might not be as much (he was also foul prone at college). But I like the arrangement with him--play him off the bench until he shows drastic improvement, have Dalembert cover up as starter for the time being. For all his offensive warts right now, he's still producing like an OK roleplayer in impact, so while he's not helping us, he's not killing us either.
He really ranked highly with me in the draft, particularly with his offense, so I can't help but think that eventually he'll become a good offensive player over time--not to mention that high usage, high turnover big men who can create their own shots (as he is) tend to progress much further on offense than your prototypical shotblockers and stiffs. Based on his college numbers I'm still calling for him to be a very good scorer and rebounder eventually, but I'll be skeptical of the defense between the lack of blocks/fouls. To me, he'll be a player who can do that scoring/rebounding thing well, but will also have warts (such as those I mentioned) that will also frustrate fans at times. He might just need time and nurturing, but I could understand why some are really skeptical about him--with his weight history, motivation/immaturity issues, and now the immature overall game he's showing, there could be flameout potential--not because of the talent, but because of motivation. I tend to be on the former side--I really think he's a great offensive talent with the physical tools to aid him there, and think he can get there eventually. Might not be this season, but hopefully incremental improvements over the next couple of seasons.
He does have the talent to be a 20-10 guy. If he puts his nose to the grindstone, I think he could get there sooner than four years. More like two to three years, just as a guess. 
I'd like to see what kind of quickness and agility he would have if he were in phenomenal shape - Kobe Bryant type shape, or for 9rs fans, Jerry Rice type shape. With his lateral quickness and strength, I think he could be more than adequate. But again, it comes down to how much he really wants it.
But the reality now is that Cousins is on a team that is offensively deprived. And he's pressing in order to get some baskets. In a somewhat similar way, Tyreke is going through some of the same issues. It's all going to work out as long as Westphal and his coaches can impart a serious work ethic to these guys. Greene is a case in point. It's really not nearly as much about the rotation and minutes and Xs and Os as it is about work ethic. The rest will take care of itself.
