What is the desired functionality that you are missing?
When looking at avg duration of process instance visualized as charts I would like to be able to drill down to a view that shows the information on an instance level.
Additionally I would like to be able to find out which instance this is so that I can eventually display more details about this.

Which problem are you going to solve with this functionality?
This functionality helps me to manually find and analyse instances that went mad / have very long durations.

Hint:
Consider Jira dashboard drilldown (everything is clickable)
Consider clicking to see a raw data report with the desired filter (see example below)