Tony
I have no idea where you are coming from...you've got some pretty extreme thoughts on this whole subject....bordering on asinine.
You preserve these important designs as best you can...reasonable standards: The original greens (size and contours), the width of the fairways (a good tree program) and the hazards (a reasonable facsimile of the original bunkers or the evolved bunkers). I don't think moving tees is a big deal.
Is GCGC not a well preserved course because the 12th has been altered...I don't think so. It is one of the best examples of a well preserved course that I know of (that would nearly perfect if the 12th was restored). This is not an excercise in absolutes....you do the bes tyou can based on the circumstances.
Golf courses are living creations, there is always going evolve a certain amount...in doesn't need to be a carbon copy, a reasonable representation of the course at its high point (greens, fairways, hazards)...and above all you keep RTJ, Rees, TFAzio, A.Hills and the other well meaning redesigners away from these landmark designs.
NGLA, Cypress Point, Morfontaine, Hirono, GCGC, Pine Valley, Swinley Forest and other important designs (a relatively small number I might add) should be preserved because: They are first and foremost wonderful golf courses--fun, interesting, beautiful and challenging. They are the best designs of the best architects...they should be treasured like the best works of other great artists. Not only to enjoy on a ongoing basis, but for future architects to study and learn from.
A few examples of courses that were unfortunately not preserved and protected: Inverness, Bel Air, ANGC, SFGC, Yale, Timber Point, Lido, Boca Raton, Cape Breton, Riviera, Sea Island, Hollywood, Brook Hollow, Ponte Vedra, St. Andre, Chiberta, Princes, Birkdale. There have been a lot of idiotic moves in the past...hopefully we can learn from our mistakes.