Talking to Adam Messix today who has walked Philadelphia Country Club but has never played it, we got to talking about the 16th hole. 16 is a downhill blind tee shot to a green benched on the hillside and heavily bunkered. In firm and fast conditions, the best chance of holding the very small kidney shaped green is to hit a high demand shot that lands over the bunker short of the green on the left where it will feed onto the green. In soft conditions, it is so much easier to fly the ball on the green with a lofted shot. To me this great hole is severely compromised in terms of strategy and difficulty under soft conditions.
I'll see if I can find a picture of the green end to post.
Now for most classic courses, maintenance practice (firm and fast) and weather conditions (dry) are key. But what holes play significantly different in terms of strategy and difficulty under soft rather than ideal conditions?