The ratios of fats, carbohydrates, and protein should be instantly visually glanceable.
Not sold on this. Most people can't use ratios effective ime, and it's not obvious what 'good' or 'bad' ratios are, which means it'd mostly be ignored. I agree about fiber content. The most astounding thing to me about the existing label is that it uses metric units, a rare triumph of common sense over xenophobia.