Couple of thoughts...
1. I agree that Tony took the cheap way out of the Vito situation.
2. It was only natural that Tony develop a gambling problem. Like he said, he's been so lucky for so long, that he has to get a little high on himself.
3. WHERE is Artie and Julianna?!?!?
4. Why did Hesh's wife/girl die?? Did Tony order it? It seemed to unnatural and she was very young.