Something that would be great in the statistics page would be to be able to see graphs of averages instead of just totals.

For example:
Say for May I tagged "development" for 50 hours
Then for June I tagged it for 45 hours

It would be nice if we could see the following

May: 5.0 hours per day
June: 4.8 hours per day

Average per day over the course of a month would be helpful if you are looking at two months that have different number of work days.
May may have 20 work days and June may have 22. The raw numbers might not correctly represent if you, on an average day, for that month spent more or less time on a particular tag.

Other ones that would be nice
When "group by" = week show averages by day
When "group by" = month show averages by day (above example)
When "group by" = year show averages by week or month

Hope that makes sense.

Thanks!

Btw Love manic time!