When we mine solid rock by hand, sometimes it opens up a space all at once. So clearly it's possible for a script to change the solid rock into revealed terrain. So, couldn't the mod offer a kind of machine (after researching and building it) to automate that work? Call it "tunnel drill" or "horizontal drill" or some such. It could work in the direction we point it, or not, that's not important. It could work in a spiral in all directions, or at random, like the radar does. As long as it runs automatically. This would relieve tedium and make the mod much more entertaining. I see no technical barriers against it. But I'm not familiar with the modding API.

Let me see ;)