Chouji's dying will really help Shikamaru's growth, up to now, shikamaru thinks as if he's playing a chess game, he hadn't realized the meaning of losing yet (he was never hurt, or in a real near death situation), each time he was in trouble, he quitted or somebody came to save him...

If chouji dies it will be a real impact on the 'game playing' Shikamaru, maybe he'll start using his byraingan for better purporesess (spelling!).