It seems as if Christopher is the favorite to get killed every season so I have given up that theory. He is has always been on drugs outside of Season 5, and I think he is only dead after this season is if he overdoses on drugs. As for Johnny Sac, you're right, I think he may commit suicide in prison. It's a shame what Chase did to finish off his character, he was too important just to throw in prison but I regress.