Import of very large terrain areas is possible now in blender-osm! The whole terrain of Switzerland is imported in the screenshot below. Get the new version using your purchase/download confirmation e-mail!
Use the reduction ratio in the terrain panel for the large areas to reduce the vertex number for the imported terrain:
That was made possible thanks to the contribution from our customer Allain. He publishes wonderful educational videos made with Blender in his Youtube channel. He used blender-osm addon to create his latest video about the physics of tides: https://youtu.be/hBsG8XtWeSA?t=996