I would like to see the Bulls take up a more run & gun type game. I think they have the shooters with Kirk, Andres, BG, etc. Deng would fit perfectly in that type of system, he's an ideal small-ball PF. I think he'll be a bigger scoring and rebounding threat than Diaw, but with less passing skills.
Gomes is fine at the SF. He's pretty much like a bigger/stronger version of Adrian Griffith, and Griffith did just fine at the 3 spot playing hard nosed basketball with 6'5 height.