Mac
Hi again, VK here...
As for your message about your home course, the course you (or your course planning committee) need to see is Siwanoy CC in Bronxville, NY built in 1913-14 by Ross (leaving final design implementation to lead ground man Tom Winton) and the site of 1916's first American PGA.
I actually have an opus magnus-type course profile for the site written and in the can with RM but hasn't been posted as I'm trying to get some more mid-season photos. After Winged Foot's two courses, it is probably the "noted-antique" course with which I have the most extensive experience. I think it is the finest overall course under 6500 yards in the Metropolitan District. The whites usually play an everyday distance of less than 6150, the back tees "say" 6490 is available, but I have never seen it play more than 6425, even for top Met and USGA events.
The course restoration and associated tree removal program undertaken in the late 90s (by Stephen Kay) is frankly, a revelation. The course had become lousy with tree plantings starting significantly in the 1930s and had been larded with many different, incongruous bunker styles and presentations by various course architects over the years (RTJ, Cornish etc). While Kay did make two massive changes to the character of #s 12 and 16 (more shocking to the eye than a revision of Ross strategy) the rest is pure gold, playable at all levels from junior to local elites.
If you want more info, contact me privately.
As to your original post, it is my opinion that the genius of most admired courses starts with the green sites and the strategies that ensue, all the way back to the tee. While those can be subordinated to the powerful faculties of today's equipment the cunning bold target contours of such noted designs still force one equanimity that doesn't change - the ball must be holed out...Shots that need only carry one yard can be brutal if you haven't played smartly.
Yet for the elite level, the insinuation of your question is correct. On an average day, elite players will regularly defeat wonderful strategy components armed with modern tools. This is one of the reasons you don't see elite competitions on many classic courses and why annuals like Augusta, Sawgrass, Torrey Pines, Pebble and perennials like Pinehurst etc receive so much tweaking. That's where the elite convene, so if you want to play as a visitor tourist, be prepared for punishment. While average player's scores have probably come down at NGLA from 1909, I suspect that the movement is glacial and gets smaller and smaller each decade.
Remember too, that shooting 75 was indicative of competitive play at the elite level in the first American era, I imagine the average player was shooting far, far worse on those classic courses (one of the reasons that match play was the common standard until some years later). Drawn out to infinity on a technology path, of course the day will come when average play might be actually be defined by "72" or level-fours and scratch will be the general standard as 14 HCP is today. But god, we might have colonies on Mars by then.
FINAL ANSWER: Technology aids the elite in defeating the classic architects, but not the other 99.99% of us. The only way hickory and Haskell an teach us anything about architectural intent is if you are prepared conceptually to accept a round of 99 as fair for an average player. In relation to what the elites scored at the time of design, and the kind of everyday club play MacDonald describes in SGG, that would be about right. In the meantime, bold varied green design will always challenge us 0-22 HCP mortals.
cheers
vk