KG and Pierce should make it. I think Pierce's odds are good but KG's are more uncertain. There is some good competition at that center spot with Joakim Noah, Anderson Varejao, Al Horford, Tyson Chandler and Brook Lopez. I wouldn't be surprised to see KG overlooked due to his low minutes whilst 2-3 of those other guys make the cut ahead of him.
Terry and Green don't belong in the conversation. Neither is anywhere near an All-Star caliber player.