I'm not sure how you can 'empathize' with Ciro. He strangled his Mrs on a beach and tortured and burned to death a 15 year old girl. I'm all for forgiveness but .....
But in all seriousness, I enjoyed S4. It takes a few detours with Genny attempting to go straight, but the body count keeps on rolling and there are some great plots.
It's just as gritty and realistic as ever, just doesn't quite hit the heights of S2/3 for my lira.