2.0.0.1 Burndown Chart Questions

Here's some text from a user concerning the burndown chart. I was
wondering if anyone from the reports team could share some insight into
the current workings of the chart.

Questions from user:

I've pasted the burdown for my current iteration. As you can see, the
red line goes from the most recent blue dot to 0. This conveys the
message that the remaining work must travel the red line to be on track.
However, I believe the red line (expected complete) should go from the
Y-axis to 0. The starting point on the Y-axis would be the total hours
defined for the tasks in the iteration (just above 1100 here). The
starting point might change as the total hours change (altering the
slope), but at least it reflects the "expected complete" line across the
full iteration. Essentialy, this red line would be the same as the red
line in the burnup report, just going in a different direction. Note
also (as I suggested at the tail end of my original writeup) that the
red line perhaps should not automatically adjust, but be up to the
product owner to "reset" should a new baseline expected complete be
desired.

The burndown chart referenced in the questions above has been attached.

Thank you,

-Garrett Rolfs