Figured I'd throw my name into the hat - Pretty basic design using mostly easy-to-source materials. Stuck with the glass floors, with a slight layering for a fog effect. The only "difficult" to source block is the waxed cut copper slabs in the ceiling, but due to the 1.18 changes to raw copper drops, introduction of mountain veins and the 4x volume off of cutting copper in a stonecutter the only real issue might be waxing.
Rest of materials is a combination of deepslate, stone, and polished granite/diorite/andesite, with a little nether bricks and some chiseled blackstone.
Oh, and the blocked tunnel entrance arrows would point towards the hub.
Creative Tyme plot 4:1