Enhanced Reporting - Percentiles?

The resource metric trend will give you min/max/average/change%/change(delta)/and sum.

You can add virtual datapoints to trend graphs on dashboards using the percentile infix functions. They only work as virtual datapoints and not complex datapoints because complex datapoints only take into consideration the data from the current poll. Virtual datapoints use the time bounds of the graph to calculate the percentile numbers. You can take any dashboard built with this kind of trend graph and make it into a "report" by scheduling it.