Instead of showing burndowns based on feature and requirements, show them based on story points. So on day 1, you start out at full story points (release capacity) and with each daily increment you are indicating how much effort remains in story points.
|Release time frame|
We are excited to launch the new progress chart which provides a detailed burndown view. If you have capacity planning turned on, you will have the ability to customize the view in time or points.
You can navigate to Release > Details > Progress to view the new chart at the bottom of the screen.