Be interesting to see your Leaf Spy cell plot when you totally drain the battery. I usually have 130 mv plus deltas at that point. It will show the weakest cells.
The car is currently at Nissan for the recall and I have requested a battery check. The service advisor told me there is degradation which I told him I am aware of. However he also said the battery is discharging fast and the tech is still looking at it. Let's see what they say. Worst case I am out $130 diagnostic fees