A) It’d be great if there were navigation between the graphs, i.e. if i’m looking at the week display and i click on a certain day, take me to that day.
B) Stacked bar charts showing the breakdown of usage between devices for the time period shown would be very handy.
C) Option to view data averages for longer periods of time, i.e. show me the average daily usage for weekdays averaged over the last 3 months.