It would be interesting to plot event clusters for a family or ancestors or descendants or just a filter match result in form of a hotspot heatmap. Currently in the map view category the views only show markers for the events, but not the density of the event clusters. I think it would allow new and interesting ways to represent areas of interest or event clusters.
Sample picture of what I mean with a hotspot heatmap:
@SNoiraud You worked a lot on the map views, right? Do you know if this would be possible to implement/render in Gramps?