Layer.Credentials not a dependency property

[AndrewWhite]

I get this error:

A 'Binding' cannot be set on the 'Credentials' property of type 'ArcGISTiledMapServiceLayer'. A 'Binding' can only be set on a DependencyProperty of a DependencyObject.

when I try to bind a layer's credentials to CredentialCache.DefaultCredentials.  I've tried it several different ways, but here is one example:

<esri:ArcGISTiledMapServiceLayer Url="http://blahblahblah"
                                             Credentials="{Binding Source={StaticResource ResourceKey=MyCredentials}, Path=DefaultCredentials}"/>

Can I request that the Credentials property be changed to a DependencyProperty?

[JenniferNery]

Thank you for your feedback. I will forward it to our dev lead for consideration in future versions of our API.