As others have said - Al's a starter, but he's no star. Even a star would struggle down there. Al would certainly benefit from playing as a starter with a strong willed star could keep Al from playing outside his strengths - or a strong willed coach, I guess.
I'll always be fond of Al - that rookie year of his with the big smile, the contagious energy he brought to the court, the badass defense.... he really was a different player after the injury. I wish him well, but the P's did real well for themselves with this trade.