Great summary there and it seems to represent the situation quite well. I'd like to add that the Violis aren't the only ones seeking revenge, many montreal players were waiting for the Rizzuto empire to crumble. Desjardins best friend Bartolo had been murdered by the clan and some would argue the true violence started at that point.
The Violi angle is becoming more and more apparent it seems. It would make sense for theme to want the Rizzuto clan dead at all costs but they need support for that....the Hamilton mob on its own can't guarantee that kind of decision. They most likely have the blessing and support of the ndrangheta including nyc in the mix.