Add Feature to Calculate Sum up Time Estimate for Epic

Summary
When a user accesses goes to generate a Time Estimate report, the report is only available at issues level.

Feature Request
Can a feature be added to generate this report at Epic level similar to what is present in JIRA portfolio or as available for stories?

Extra Features

Adding on to the above feature, can a similar Time tracking as seen for stories and sub-task with the option to add the sum of time from sub-task to the story proper be added to Epics?

As illustrated in attached file.