I have three rather embarassing admissions and splotchy blotches on my golf course resume, and hope to erase them all in the next year, although 2 of 3 would probably be more realistic.
I have never played a golf course designed by Mackenzie, Thomas, or Coore&Crenshaw. There, I've said it!
I not only wish I knew them better, but I wish I knew them at all!
On the other hand, I've been lucky enough to play a good sampling of Ross, Tillie, and many other architects of the Golden Age including lesser knowns like Alex Findlay, Robert White, and Willie Dunn. I'm also starting to think that I'd go about anywhere to play something by Willie Park Jr., who was a unmitigated genius.
I also know way more about Edmund Ault, Hal Purdy, RTJ Sr., and William & David Gordon (all of who designed TONS of courses in the mid-Atlantic) than most would ever care to, but it's all part of the vast panoply of courses and interesting to study nonetheless.