The Key Metrics report was a long needed and great addition to Site Cat 15, especially the normalized option. But we need this on more reports and not just for calendar ranges i.e. trending Metrics for variable values.
Often when switching from Ranked to Trended we want to see multiple metrics more than seeing multiple values for the first metric. Several ways to achieve this:
1) If Ranked report is filtered to one value, switching to Trended automatically trends all metrics selected
a) Or a right click option on a specific Ranked value to "Trend All Metrics"
2) As a report option in Trended allow selection of "Trend Multiple: Metrics | Values"
Note: while segmenting could achieve this at some levels, it would a) take much longer, b) conflict with other segments already applied (i.e. need more than one segment), c) not a natural work flow, etc.