Gepard had a hi-res tileset for the Kuril Islands in the works, based on satellite imagery, very nice I can tell you. But it's not seasoned. You might want to join forces with him, but he is currently working on the Faroer terrain. I also made a 250m heightmap from scratch for the Kuril Islands terrain, as well as new planning maps and little tweaks here and there. But it's Gepard's terrain. First, I'd like to see his final product, then I might release a small (not standalone) enhancement package.
Back to the thread, keep up the good work, JosefK! I am really liking your screenshots with those lightnings (not the F-35s, LOL!)