I got quite some insight in the dev community, and I'm honestly not sure there is currently any progress made. The stuff someone showed me half a year ago, seemed quite okay to build with, but was still missing a bunch of stuff like npcs. If they want a new map, they need to pre-design it and then start building it with people who actually built a functioning map before. And currently there seems to be no Levels Team Member or Staff in general who has experience on maps and design. So you could offer them help, but I'm honestly not sure if a new gmap won't be in need of rebuilding all over again