Totally. Have you seen OSM Analytics - it has some really visualizations on how the data of geographies has evolved over time - in terms of roads, buildings etc

Totally. Have you seen OSM Analytics - it has some really visualizations on how the data of geographies has evolved over time - in terms of roads, buildings etc. This link[1] shows Tanzania, for example. [1] http://osm-analytics.org/#/show/polygon:ivf~DvjpdAgots%40i~sBbfiB_ghe%40hyiK%7BdbHtczR%7DxoJlco%5Cnu_C/buildings/recency http://osm-analytics.org/#/show/polygon:ivf~DvjpdAgots%40i~s...