My people seem to get stuck in what I figure to be a mapping junction
That is called a "pathing error" and I believe they are aware of it. I do not know if a solution to this problem will be included, but there was talk a while ago of a new version of the program that I read was released to the beta testers. Other known problems you may or may not encounter include farmer AI. BTW, I am very impressed with your suggestions.
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Borg 