question is how to make nice images
Beauty is handcrafted, by its very nature. Nice presentations are nice to have. I'll be proud and happy to have accurate and reliable data, presented in a manner a pilot can use. Everything else is icing on the cake, expensive (in time! my precious time!) and not really required.
And of course the site mentioned is about airspace only; for other information other sources are required. I am typing some into a spreadsheet table, and am VERY grateful for the French guys that make their data available in the same form, even if it takes some polishing.