When the RadCoverFlow control resizes, its items should resize, too. This will keep the propotions of the RadCoverFlow control according its items.

It would be very helpful to have an event on RadCoverFlow that indicated that a particular CoverFlowItem was double clicked (and indicate the logical item in a parameter).

For example:

<telerikNavigation:RadCoverFlow x:Name="CoverFlow" CameraViewpoint="Top" ShowScrollbar="true/False" ScrollbarPosition="bottom/Top">    

                <Image Source="images/Email.png" Style="{StaticResource ImageStyle}" />