Ability to track/report "days in state" when promotion and demotion of an Idea Status occur

Dates for a specific Idea that is initially promoted to a new status will get captured and tracked, however if a state is ever demoted / reversed these updated changes are not tracked/captured/updates in either the "date field for the status" and/or "last status change" field. I would like to see the ability to track the latest change status dates allow us to report on the number of days since the status was moved into a specific state.