The purpose of the lightning blitz team is to buff the main as much as possible. Since the main has lightning armor and bloodthirsty, that is the reason why the lightning blitz teams are only iruka, asuma WB, and danzo/darui. Your aim is trying to be able to have the main one shot a character so that the bloodthirsty passive allows you to attack again. If you remove danzo, you're taking away the buff from the barrier making your main weaker.