The current reports are somewhat limited. Its nice that there's a breakdown of the time/distance spent in different activities, but for the part, I just run. So, the pie chart is just about useless for me since it will always be 100% run.
Regardless, i think it would be interesting to have a chart widget that shows time or distance per week for the last 4 weeks, perhaps showing the progress made on the current week.
To me, its a seems like good motivator to see that I'm maintaining the time commitment, and my mileage is going up.
Also, as a fan of the Hacker Diet, I've found that the individual measurements of things daily don't really matter much, but rather the trends do. Calculating the trend is very very easy (.9 * yesterdays trend value + .1 * today's value). This smooths out the day to day variation that is going to happen in things like daily weight measurements or the amount of sleep you got.
Please consider adding a trend average to the daily numbers and allowing them to be plotted on the graphs. I've been using Physics Diet to track my calories eaten/burned and weight... and really like the simple charts they produce. The trendline is a very good indicator of your progress towards your goals, and allows for little bumps in the road to not discourage you too much.
Thanks for the time, things seem great so far..
Ryan