I wonder what the average score on 18 was in 1999? Weren't weather and conditions a lot worse then? If so, wouldn't surprise me if they averaged even higher.
Also, does hitting iron off the tee really eliminate all trouble? From the diagrams and from TV looks like you can still hit in the burn without much trouble.
Finally, here is the reaction from a USGA official who also worked the British Open:
"Working the event as a visiting rules official, the USGA's Mike Davis said he couldn't think of another links hole with so much going on at the end: O.B. left, grandstands, the burn, all at the end of 500 yards of major-championship pressure. It might not be a classic hole in the true sense but, as McGinley said, it does create drama, and it made anything Davis set up at Oakmont for the U.S. Open look tame. "It strikes again," Davis said, almost enviously, "doesn't it?"