I am looking for a way to generate a report and/or do more things with stage history.  I want to be able to generate a report that 

1. shows me how long my Potentials are sitting in each stage
2. shows average number of days for stages
3. gives ability to generate metrics on how long Potentials are in the pipeline (e.g how long from quote to signed contract)
4. allows to show trends from month to month on each stage.

I don't see this capability thus far.  Any pointers?