Need year-over-year and month-over-month for basic traffic metrics  (A/B compare function)

For site metrics like pageviews or visits, you can currently only get last week or last 52 weeks, but no percentage changes. But for ranked other reports (like pages, keywords etc), you can. Therefore you can't add these important metrics (usually KPI related) to dashboards, therefore I am forced to have to use report builder to do these year over year or month over month calculations.

Thanks.