Comment:
Re #9, it is somewhat pedestrian... BUT... get in one of the bunkers and all of a sudden this "gimme birdie" becomes "please let me make no more than 5." And the way the bunkers are placed, there's a lot of luck involved in missing them... they are right where a lot of good drives might land... but the ball can and does bounce over them also... to me this makes the hole very interesting and fun...
For me, the experience was a bit different because before the first time I played it (1987), I sorta knew about it, but not much - I had given it next to no study. So EVERYTHING ABOUT IT surprised me. Coming back again in 1998 and then again 2003, well... I had no surprises because I had seen it, and by that time had studied it in greater depth than just about any course I can think of.
I guess what did surprise me in 2003 is something I hadn't noticed before, and that is that it seemed to me one faced the same shot into greens quite a few times: up and over a false front.
But I concur with all the rest of your ruminations anyway.... except I saw that powdery brown sand several other places in Scotland, I think... I don't recall that at the Old Course being unique... but I surely could be wrong.
TH