Region Variants Predating Conditional Links

Andrew: Undergrowth and Waterfront Complex probably don't quite merit being
their own regions, but their creation predates our conditional links system.

Andrew: Back then, as a technical limitation, allowing a region to be this
much different was only possible by making it an entirely separate region.

Andrew: Later, conditional links allowed us to create things like "Past Garbage Wastes".

Andrew: And allowed it to be incredibly different from "Future Garbage Wastes", despite them both being the same region internally.