It's tough to speculate because we really don't know ALL the members of the family. I mean who the hell heard of Tony Uncle Al before season five? How much time did Feech have to serve for his parole violation? He had strong ties to New York and if Tony was hit by Butchie then Feech would be a good puppet boss. But who knows how many other cousins are out there quietly plying their trade in the shadows or in prison?