I'd love to see a graph that displayed visibly the body fat percentage lost over time. It's also nice when it can do the math for you and show you what your BF% shows up as. For example:
Janine weighs 175 and has a body fat of 32%
One month later, Janine weighs 170 and has a body fat of 29%
So a nice little graph showing her progress on both weight and body fat would be nice, plus a little calculation saying:
Janine started out with a lean body mass of 119.96 and 55.04 pounds of fat. As of today, Janine has a lean body mass of 120.7 and 49.3 pounds of fat, which means she has lost 5.74 pounds of fat and gained .74 pounds of muscle.
(I also second the idea of having a graph that charts caloric/nutritional intake)
::EDIT:: Sorry, I just signed up today and didn't realize you got no graphs til you had three days of data... But I still think the actual math numbers would be nice!