Whoa flo thats awesome! I love the terrain variety. It doesnt look fully symmetric tho, and I can tell by looking at the highground surrounding the nat. But i dont think its a huge problem.
i dont think it ever should be 100% symmetric. it should only provide the same space everywhere, that i remember.
again very experimental with multiple chokes, a nat backdoor and obstacles (mins, buildings,...) around the natural to close it down
that's very possible, for it is almost finished (expo placement needs tweaking), but had no name. it was "Grrr.scm" as i was cleaning up my maps folder^^