Hi,
Afraid I can’t offer any insight here as I have no experience for this type of task, I barely just consider myself a data scientist. Hopefully Grafana consider Kepler as an option for a future plug in, or at least inspiration for dev of the world map.
You can keep an eye on this thread related to development of the Worldmap Panel, I’ve put forward some suggestions that mimic plotting custom shapes on the map similar to Kepler,
Cheers
Sarah