please please please allow date comparisons on key metrics and referrer type reports!

The key metrics reports are essential to the analytics teams, and I think it's fair to say that we shouldn't need an API to properly trend dates for page views, visitors, visits, etc. These reports are often the main reports used by very casual users of Site Catalyst and the question of why this feature is unavailable comes up very frequently in my organization.  (Some continue to rely on Google Analytics just so they can easily compare date ranges on key metrics).  it would be a great help to everyone if we could enable this functionality!