I have nothing against KT and I believe that if Kurt would have been healthy in last season's playoffs the suns would've advanced ever further, but he wasn't. What comes to trading him, if I should choose between Wilcox and Gooden, I would say get Wilcox. He's more the type of player that would fit in the front court better, because the suns need someone to bang on the boards and he can also score (amare is still a question). Much like Gooden, but I think after last season, Wilcox would play even better.
(Funny thing: Did you know that Gooden is the best player ever to play in the NBA who has Finnish roots, he's mom is from Finland)