I don't think it's a funnel to a kill zone, but it certainly did seem like a convoluted path to discourage random exploration into the colony's home base. The weird thing about this whole thing right now with your theory to me: If they do indeed want people to follow the signs, why all the secrecy and not wanting more people to know about the colony. If they truly wanted to stay hidden and rebuild/repopulate (bow chica wow wow!) wouldn't they want to take down those rescue signs? The fewer people who follow the signs, the fewer people know about the Colony. That appears to be a main bullet point of the Colony's Mission Statement.
Sorry I missed this theory on the other threads and thanks for catching me up!
While this is not a two page essay, I will accept this as your homework assignment. ;)