We'd like to use the metric Visits for Traffic Sources > Referrer Type Report
Today only Unique visitors and Instances are available.
We use the Referrer Type Report as reportlet in our dashboard reports for our subsidiaries and we got feedback that they could better understand Visits.
So this metric would be very helpful for us in SC.
By the way: For Discover and Data Warehouse we have this option - so it would be very cool if it's also available for SC.