Nothing
BOOM. My thoughts exactly when I saw this thread's title.
For those who say Prestwick lacks length in the modern era, I strongly disagree. From the tips, Prestwick tops out at over 6,900 yards. That includes par fours of 346, 347, 288, and 284. That means there is a lot of meat on the other 9 par fours. The stretch from 5 to 13 is as difficult a group of holes as you well ever want to face, with a combination of length and rugged terrain that is nearly overwhelming. I expected Prestwick to very short and quirky. While it is certainly the latter, it is definitely not the former.
As I said before in the Byrncliff thread, there is golf and there is adventure golf. I much prefer the second type of golf, and Prestwick has that second type as much as any course I've seen. The blind shots, the railway boundary, the wacky greens, the stark topography, and funky routing are all part of the adventure. Prestwick is great because of these features, not in spite of them. From my view, if you don't love Prestwick, golf's meaning to you is diminished in some way.
Prestwick's consistently low rankings are one more reason I have little use for magazine ratings.