Think the 18th should be the easiest? When was the last time you saw a good finish at the 18th on St. Andrews during a British Open? Maybe Daly and Rocca? With that exception, it's the most boring finish I can think of.
Whether it's a par 3, 4 or 5, I think it needs to be a good risk/reward hole. Birdies there for the brave maybe but penalties for not pulling it off.
It has nothing to do with the last hole though does it, the 16th & 17th have been dull holes at the end of the Opens at St Andrews since 84 apart from when Daly won it, Faldo won by 5, Woods won by 8 & 5 shots, and Louis O won by 7 shots.
St Andrews usually delivers blow out winners, when things have been close it has provided drama, Sanders and Rocca notably, Seve made birdie when a bogie would have meant a play off.
So any theories why St Andrews gives so many blow out winners?