You should be able to use RadMap with EmptyProvider and all features that are relevant to it. We have attached a sample xbap application that demonstrates ESRI Shapefile, Heatmap and built-in legend support.
We will also investigate and address the problem specific to the XBAP Quickstart Demo application that currently prevents it from loading the map examples properly.
the Telerik team
Browse the videos here>>
to help you get started with RadControls for WPF