Gotti moved on Paul because it was kill or be killed. I do wonder though if Gravano would have still sided with Gotti if Demeo had still been around?

Castellano didn't like Roy, even though he was a good earner because he was out of control and too many murders.

I would say that if gravano or gotti approached Roy with there views and plans,then Roy would have went with them like a shot.Bye bye Nino aswell.

Not sure about that. Roy wasn't exactly a fan of Gotti. anyway its tough to say because Roy died a few years before this plan was ever discussed. I mean the only reason Sammy went along with it was because of Frankie decicco. Sammy wanted Frankie to be boss(He was a better option obviously) but Frankie let gotti have it. IMO Frankie figured that they would use Gotti as a lightning rod for the feds and eventually take over anyway