Well, if it must end
I suppose the best ending would be for Tony to get his just desserts. Exactly how, I'm not sure. Yes, Carmella murdering him would be interesting.
I was thinking about him losing his entire famiy, both blood family and crime family, leaving him totally alone in the world. And not to be like Michael Corleone's ending, maybe Tony's family would be murdered and his crime family would disown him somehow.
But what do I know. I just am looking forward to this last season, and hope there are interesting surprises of some kind.
TIS