Wallace was a bum with the Bulls. The Pistons did a good job of boosting his appeal, but he isn't that good of a player. Maybe he will help LeBron a bit, but it isn't much of an addition.
As a Bulls fan, this trade pleases me. Get rid of the contract (and space taken up by Wallace). Gooden is a solid addition, but Wallace was a problem in the locker room and a failure by all accounts. He needed to go.