Nash and Boris run an amazing pick and roll. Boris' mid range shot also improved ten-fold once Nash was getting him so many open looks.
Other then the above sequences, Nash doesn't help Boris' game half as much as he helps everyone else on this team. D'Antoni just figured out how to use Boris and he grew into his role.
Big mistake by the Hawks. Especially once Boris becomes an all-star and those 2 picks ATL gave the Suns turn into valuable depth.