Frank Cotroni wasn't even a force in his later years, especially after his last release from prison. I also wouldn't jump to conclusions and assume the Cotroni group has all of a sudden regrouped, and become a force within the Montreal Mafia like old times. If there is some newly consolidated Cotroni group, I'd place it in the same group as the typical factions. Meaning it's group comprised of other Italian Canadian & French Canadian criminals moreso than Cotronis themselves. In other words, I simply don't believe there is anything at this point to go on that leads to them suddenly being a standalone faction.
Despite the power shift, Frank Cotroni appeared to maintain considerable influence in Montreal's underworld. In July 2002, he was still described in police intelligence reports as "an important person in the Montreal Italian Mafia and in Canada."
In '00 period before he died in '04, which are the "later years" I'm referring to, Cotroni wasn't much of a factor in the Montreal underworld, this is at least according to The Northern Connection & Peter Edwards. Not saying it's facts, but there's no reason to assume Edwards wouldn't have an idea. A law enforcement officer from the time is quoted as saying "he's slowed down quite a bit. The organization is in tatters, if you want to call it an organization." This officer is unnamed however, and I don't know which organization he's referring to, most likely the Cotroni group itself, meaning the direct group whom was under Cotroni & his brother themselves. He definitely stayed in contact with various undesirables though, I won't deny that, which was his reason for going back to prison in '02 on a parole violation, meeting with a man who went on to meet with old Cotroni associates. I believe he even released a cookbook during this period, I wonder how guys would've felt about that. It's not exactly writing a memoir but who knows.
Chapter 28 of the aforementioned book details the murder of Franks son Paul in '98. There's another quote by another unnamed member of law enforcement, granted, but the rumors were to them that the killers did a sort of risk assessment before they killed the kid and they supposedly determined "They (Frank's Crime Family?) didn't have the clout in place..."; Meaning the "old Cotroni group" of Frank's didn't have the clout to avenge the death of his own son. These were supposedly bikers, as rumors were he was selling diluted cocaine to biker gangs. Again, rumors, but again Edwards was also a reporter for these groups specifically, and this specific book is usually referenced when sometimes the Cotroni's come up in other places. But hey, he could be wrong, I don't suspect him to be right about everything.
As far as the current status of the immediate group, I think Frank's son Francesco is still around, he served time for murder before, and if he isn't in prison I can see him being the representation for the "Cotroni group", I guess in the same way Leonardo would be for the "Rizzuto group", so I could be wrong about they're current place within the Montreal milieu.
It was also a dumb move on the Rock Machine part to pick a fight with the Cotroni's while they are waging war on the Hells. The position of the mafia was do do business with both biker gangs. The Mafia didn't want the Hells to become too powerful. They were playing a balancing act with them. Peter Edwards mentions that in this book that I am presently reading the "The Bandido Massacre"; also heard the same from another source.