Tom MacWood:
I define good routing as unpredictable -- always keeping the player guessing -- maximizing the usage of all clubs in the bag. No easily discernable patterns. Superior routing is about forcing the player to use the mind throughout the round.
My history isn't as sharp as yours Tom so I can't list a solid listing of courses where old time architects had "run of the mill" control of their respective sites and did not have to worry about environmental conditions the way today's designers must. I will be looking through courses in the metro NJ / NY area for examples. I'm sure fellow posters may know of some to list for other locales. I credit today's designers in handling the array of details they must deal with in coping with local, state and federal regulations.
As far as courses with wonderful natural sites but little strategic vision I would list the following:
Torrey Pines / South (CA)
The Kittansett Club (MA)
Sandpiper (CA) / minus the 10th and 11th holes
Eugene CC (OR)
Maidstone (NY) / minus the 9th hole
Given the natural sites each of the above has I hoped for so much more in their strategic vision. I will be most interested in seeing what Rees Jones is able to do with Torrey / South because the original layout was a big yawn and vastly overrated simply because it hosted a tour event.
Tom, you're right, good land is still available in the midwest and other places, but what about location? Sand Hills (just one example) is wonderful, but it's a playground for the rich and those who want private exclusivity. Developers looking to public golf as a possibility need to keep sites in places the masses can access in order to max out profitability.
The visual stimuli is important -- I'm not saying it's not. But, I look to the strategic elements within the holes / course first and foremost. The natural v unnatural debate does not really understand that man's hand is part of the equation -- sometimes more and sometimes less but always to some degree. As in any debate I guess it's matter of degree to suit individual tastes. Keep in mind some people get caught up with the visual element and in a number of instances the actual holes may be lacking.
A good example of a course with great strategic interest but lacking visual quality is Pinehurst #2. How many times have people said the course does not photograph well, but the inherent strategic appeal is beyond words. Clearly, Ross took the existing land and shaped it in a very precise manner to get the superlative results he wanted.
Hope this helps ...