I would like to be able to filter on a date field, choose a relative condition (like before or after), and specify another date field instead of choosing an explicit date.
As an example, if I want to view a list report of all my features that have a due date beyond the release date, I would need to filter on feature due date as being after a specific date. This would work if I were looking at features within a single release, but I would have to create multiple reports if I want to view a list of features that span multiple releases.