You may be right...but I do believe if DelSanter lived, the outcome of the Greene situation would have been different. I think he would have been more of a voice of reason with Licavoli. Just my opinion...but definitely a plausible one. DelSanter was a guy who would have rather made money than fight a war. He always looked at the $$$ and made no bones about it that he didn't get into the life to murder...but to make $$$. He was described as a lover, not a fighter but wouldn't hesitate to put one in the back of your head for the right reason.
But Rick Porrello says in his book "Kill the Irishman" that DelSanter actually encouraged Licavoli to kill Nardi and Greene, while Licavoli initially preferred to wait.