Add whole food (fruits and vegetables)/processed food/animal food categories
There are several diets that say a certain percentage of your diet should be whole foods such as fruits or vegetables, less than 2% processed, less than 10% animal protein, etc. I would love it if Cronometer added this additional breakdown of categories. It would be a huge eye opener to someone trying to eat healthier but still consuming a lot of processed foods. They'd be able to really see how much of their diet and calories really come from healthy fruits and vegetables as opposed to processed junk food.