If you add more to your list I might contribute to it. I briefly checked your list and in the distro list you are missing of the important new ones - Solus. :)

EDIT: I don't think you need to have huge screenshots everywhere (personally I rather have text info than graphics) and it's not super useful anyway to show screenshots since it does not tell you much about anything at all. Feature lists, as in bullet points, would rather get my preference.