Joe was the craftiest but he grew soft in his old age. It pissed me off how he went so out of his way to please Marlo. Especially introducing him to The Greeks, knowing how ruthless and ambitious he was. Plus he showed Marlo damn near every trick and connection he had to the point where Marlo didn't need him anymore. He was naive in expecting loyalty in return. Then there's the whole family loyalty like you mentioned. He knew better than to trust Cheese. I loved Joe but he should have known when to retire.