For what it's worth, as I've said before, I think the basic premise of BRIGADOON is fatally flawed in that we're supposed to believe that ONLY ONE person in the town hates the fact that the town disappears for 100 years each night and that NO ONE can leave the town without causing it to disappear forever. We're supposed to think that all but Harry Beaton consider this spell on the town a "miracle" and a blessing. Isn't it probably that SEVERAL people besides Harry might want to eventually leave the village at some point? And, under their present circumstances, and considering that the town is probably quite small, wouldn't inbreeding become an issue eventually?
As the recent York Theater productions proved: When Lerner was bad, he was really bad. And, unfortunately, he was bad very frequently.