He only took Castellano out because he knew his time was short. Big Paul was pissed because of the Ruggiero tapes and less we forget JG brother Gene was a major drug dealer too. I think Paul hated the whole Bergin crew.
To think the JG was anywhere on Paul's radar for a promotion is a joke.
I thought Tommy Gambino was a garment industry executive back then, not a street guy at all...