It would be great to add functionality in the designer to create custom maps with custom shapes apart from the default map which provides countries and regions.
For most mapping scenarios based on countries/states/cities etc. usage of Bing Maps for visualization is an overkill and not really warranted. The resulting visualization is slow to render and non-responsive. The level of detail provided by "real" maps doesn't add any value (in most cases) and distracts from the real value of the map chart. An option to use a specialized map charting control (like amMap or similar) would improve the utility of such a visualization by a magnitude.
