One of the issues I have with the current labelling system is that unless ones kmows the star rating process (which is not many of us) and then takes time to read the nutritional panel, one doesn't really know why a particular food got a particular star rating.
For example, three boxes of cereal could have a 4 star rating, one with elevated sugar, one with elevated salt/sodium and the other elevated fats.
One looking at the boxes would assume healthwise that all three at the same, but for one trying to say reduce sodium intake, the first two may be an okay choice, whilst the third may be a poor choice.
It would be good if the stars showed somehow why the rating was given...e.g. high sodium, sugar, fat etc so one can make a more informed choice about the products they plan to buy. This could easily be done with simple coding on the same label.
Such additional labelling could also force manufacturers to change their ingredients to make them more healthy...especially if everyone started to buy products only low in sugar and fats as an example.