Implement WrapAround mode in Silverlight, just like it behaves in WPF. http://docs.telerik.com/devtools/wpf/controls/radmap/features/wraparound

The ImageProvider should support the scenario when the geographical region which is covered by the provider should be moved.

The map control should support new Birds Eye features to be able to use tiles of bing map provider which are created for zoom levels lesser than 19.

The RadMap control should support displaying copyright info about currently used map provider.

The MapPolyline should support the driving direction feature. It should be able to displaying arrows.

The encoding of DBF-file is determined automatically by MapShapeReader. When the file has the unicode fields then the reader does not convert unicode characters (å,ä,ö) properly to the extended data. Currently the MapShapeReader does not contain property to assign the certain encoding for DBF-file.
The MapShapeReader should support to assign the certain encoding for DBF-file including UTF-8.

The caption of map shape should be updated automatically when the CaptionTemplate is changed. When its content is changed then it should be located according to hotspot if it used in the template.
The caption should be updated according to the map shape properties. For example when the MapShape.Visibility property is set to Collapsed then the caption should be collapsed. Also if the shape is moved using the information layer API functionality, then its caption should be moved too.

Also it should be possible to define different font size, foreground color, font name for individual shapes.

The MapLayer will contain new ZIndex attached property which could be used like the Canvas.ZIndex property for elements of the information layer.

The map navigation buttons will support the functionality like the auto-repeat when a key is pressed.

The MapShape data template does not allow to use event triggers like to the following way:
<telerik:MapPath Stroke="{Binding Stroke}" Fill="{Binding Fill}"  StrokeThickness="1" Data="{Binding Geometry}">
    <interactivity:Interaction.Triggers>
        <interactivity:EventTrigger EventName="MouseLeftButtonDown"> 
            <interactivity:InvokeCommandAction  Command="{Binding MyCommand}"/>
        </interactivity:EventTrigger>
    </interactivity:Interaction.Triggers>
</telerik:MapPath>

The VisualizationLayer does not always show items when the RadMap uses a custom map provider which uses a custom UTM map projection.