I agree with all your points. It's why I've used Evernote less and less over time. As for point 6, if you are on Mac/iOS, Clear App is a great way to handle the list issue when you are actually in the store.
I hate shopping, but this has certainly relieved some of the pain for me.
Tesco has an app which tells you the aisle and which side to look on as well. It's pretty cool, but last time I used it, it was quite clunky.
The Aus/NZ ones are much more like supermarkets, I went to one in NZ and sadly found Pick-a-mix was not a focal point at all.