Watched the latest mapping video here. Pretty impressive! How close can metabase get to this tableau visual that dynamically draws a radius on a map and filters the selection to that radius?
I think the closest I have seen is just heatmaps, but that's not exactly what you're looking for.
From the screenshot it looks like Metabase would need to hook into OSM's address information, but it's not completely clear.
You're welcome to open a feature request and describing it in detail.