To be able to filter by due date on or before Today or Next 7 days or This Month but ALWAYS based upon TODAYS date: currently if you want to setup a filter i.e. for the next 7 days and save that filter it will be fixed to the original filter date. It would be better to have it be dynamic and always be i.e. 7 days into the future. Otherwise, you cannot have a useful saved filter as it would be filtering for days in the past. But if filter always filters based upon today's date, it would be more useful.