John,
I’ll come at your question from a tree perspective. I dig your emphasis on trees when discussing the changeability and evolution of golf courses. As a hazard, trees are unique in their combination of cyclical (seasonal) change and linear (growth) change.
A digression: I think that trees have been maligned on this site. In this day and age, we are far removed from the time when trees provided for all human needs, and as a result they do not get their proper pride of place in our lives. I don’t think it’s a coincidence that our species’ precipitous rise to dominance on this planet was immediately preceded by the emergence of the modern hardwood tree (A plant which gives us a building material that pound for pound is stronger than steel, yet possesses a random and subtle beauty unmatched by any other material in my opinion).
None of this is to say that a golf course lined and covered with trees is the ideal. And I certainly am an ignoramus when it comes to the history of golf and golf course design. But I do think that, as hazards, trees deserve the level of nuanced thought and discussion that is often reserved only for bunkers or green contours. Discussion of this kind would probably lead to fewer, but better trees and tree hazards.
Charlie