Geography is a key dimension in many types of analysis. BOARD has good geomap tools, but they could be improved. I recommend adding a visualization like the following. This allows bar charts to be layered upon a geomap to visually show spikes and trends in the data, with respect to their geography rather than time. Using colors, bar height, location areas of spikes and trends jump off the screen, screaming for further investigation. Many visualizations for spikes and trends refer to time, whereas this helps us refer to geography.
This image comes from the following article.