I'd love to have this as well. I have recipes which are essentially pictures of recipe cards from family and friends. When viewing them in Evernote (on a phone), it is easy to accidentally click on the picture, which puts it into edit mode. And then some random screen touch ends up deleting the picture. I managed to find the restore feature (on my laptop) and restored the note and then deleted the edited one. What a pain.
This would be prevented by making the note NOT editable.