David,
When I was at PVGC last week, some of the members were speaking of the 1st hole, and how the hole was designed to be a 19th hole "tie-breaker". I have a book about the history of the club that I bought while there, and in the hole description of the 1st, it states that George Crump was "bent on providing drama and danger on a hole where the round would commence and, in a sudden-death playoff, would possibly end". Then we started talking about Royal Liverpool and how the 1st there has a similar effect (that one may be more of a coincidence, though, but who knows? The "1st as the 19th" argument might have been made to justify the hole and its internal OB when the practice area was created).
I like the idea and agree that it would be interesting to know if any GCAs bought into the idea and/or wrote about it. If it turns out that it was largely Crump's idea alone with specific respect to Pine Valley, than that would be equally interesting.