Hey, I'm a fan of Speights' offensive productivity. I think that having him, Gasol, Randolph, and Arthur might give us the best frontcourt in the league. At the very least, how many teams do you know that would rather have four of their PF/C's shooting the game winning FT than their leading scorer? I've just always been disappointed with his performance on the defensive end (which to his credit, he's improved a lot since his Philly and UF days).
It's also always bugged me how physically intimidating Speights is, yet he's not that great of a post-up player, and he tends to shy away from contact. Guys like Gasol, Randolph, and Arthur can hit the midrange, but that's only one aspect of their games. Gasol, in particular gets unfairly labeled as a Euro-center because of his brother, his passing ability, and his shooting ability, but he's an intensely physical player on both ends of the court. Speights is 6'10", 255 lbs., and is probably very underlisted when it comes to his weight (he looks at least 275+ lbs.), yet his offensive repertoire is like Pau's but without all of the offensive awareness that make the Gasol brothers great.