I need help with a report.

[Deborah Hilton]

I want to see timelines of an EPIC and all the Stories and tasks beneath them (Due dates vs. completion dates....)

Also, averages on common stories and epic time lines (slippage and delays and point out poor estimating and planning.

[Aron Gombas _Midori_]

There may be ready-made solution for this, but one option (with great fexibility) is to create a custom template for the Better Excel Plugin which would:

1. Export an epic ID, Name, Due Date, Resolution Date, etc.
2. All issue linked to that epic, with its ID, Summary, Due Date, Resolution Date, etc.

And then use Excel's charting capabilities to render this into a timeline chart. You can use the stacked bar chart for this purpose.

[Ash]

Did you try using  Portfolio Addon ?.