I just got back from New York and saw this thread. As a GD guy, I have no clue why Five Farms is not on the list. None. As for some of the other questions, I can't believe Kingsley isn't there as well, I absolutely loved that place and I know a lot of other GD guys did too so I am baffled.
Wade Hampton is awesome and deserves it spot on the list. I thought it was plenty walkable and was firm and fast when I played it.
Pete Dye also baffles me. I loved the place, but my fellow GD guys put it near the bottom of the top 100 (which is still pretty darn good).
As for Friars Head, you need 35 raters to see a course before it can be included so my guess is not enough saw it. You only need 10 for Best New stuff, but 35 for Top 100.
As for Oakmont, it was my #1 rated course and I played all of the biggies except Augusta. I played Riviera too and thought it was top 30 easy so I was a little shocked at how low it was.
My favorite course is still Cypress Point with NGLA close behind, but they don't receive some of the points Oakmont gets so they are not as high on the rankings.