Wilcox looks mistake-prone to me. He offsets that to an extent with his ability to beat his man up the floor, but he's still an inconsistent rebounder and a poor team defender.
Hopefully he improves as the year goes on. Given the fact that he just missed a half of a season with a heart issue and then missed much of preseason as well, there's reason to believe that he could get better on things like positioning and rotations as he knocks the rust off. I think he's already the 3rd best big on the team (behind KG and Bass), but that's as much an indictment on our backup bigs as it is a credit to Wilcox.