Customers request that the chart show one additional point on the left and one additional on the right. This way RadChart creates a nicer illusion of a zoomed in graph.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

The user needs to replace the TextBlock with a CheckBox.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView (axes have a LabelTemplate property).

Currently the axis labels are rotated around their center. The rotated labels top edge should be aligned with the center of the corresponding data point (e.g. bar).

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Track values of current mouse cursor X position.
Can be seen here: 
http://www.google.com/finance?q=INDEXDJX:.DJI,INDEXSP:.INX,INDEXNASDAQ:.IXIC
and here:
http://people.iola.dk/olau/flot/examples/tracking.html

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView (TrackBallBehavior & CrosshairBehavior).

Additional functionality for creating labels and flags over the annotation is needed.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Implement logarithmic X axis in RadChart.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

On data change RadChart should redraw only the series items that are actually changed, and not the whole series.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Implement two-dimensional Radar / Polar series type for WPF / Silverlight.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

CustomLine is rendered multiple times when zoom enough in. Setting AutoRange=false and/or SamplingThreshold does not seem to help.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Spline series is drawn incorrectly in scenarios where the data points are clustered in several spots along the XAxis with large gaps in-between.
Sample data:
Data Series Sample:
datetime / double:
21/01/2011 12:08:00AM / 10.0
21/01/2011 12:09:00AM / 16.0

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView.

Chart: Extend XAxis -- allow arbitrary start value with ticks, placed on round values. Ex. MinValue = 127, MaxValue = 200, Step = 10 -> the ticks should be placed at 130, 140, 150, etc.

REASON FOR DECLINATION
This is supported out-of-the-box by the new RadChartView (axes have a TickOrigin property).

RadChart.ExportToXPS/ExcelML should support exporting multiple charts to a single XPS/Excel document.

REASON FOR DECLINATION
This is supported out-of-the-box by the RadPdfProcessing.

Last AxisX label missing when manual axis range is set (the behavior is not consistent with the automatic axis range).

When using a MarkedZone in the chart and than try to change dynamically the theme €“ it throws an InvalidOperationException

Chart: AxisY labels are not correct when IsLogarithmic=true and AutoRange=false

No exception, but series are not added.

Axis labels need to be styled individually; for example: different axis labels to have different colors.

enable localization for human readable formats

RadChart cannot show tooltips both on chart series and custom grid line.