I believe #5 to be Yale's weakest hole because the green is large and relatively bland compared to the rest on the course. If a Short hole is going to have a fairly large green, it had better be quite boldly contoured. I haven't played too many CBM/SR et al Shorts, but I gather that the best ones ask a pretty good variety of shots of the player one day to the next. Also, because the player has one of the shorter clubs in hand for the shot, merely hitting the green should not be enough to put the golfer at ease about making par, as is generally the case at Yale #5. The 18th at Old White is superior to Yale's Short because of the thumbprint, which a) allow the hole to require different shots one day to the next and b) certainly does not guarantee a two-putt, especially if you leave your tee shot on the wrong side of the mound.
That said, a great short (small S) par 3 need not have a huge green, IMO. The alternate thrill of a do-or-die shot to a small target surrounded by peril is one of the great confrontations one can have on a golf course. That's why I love the 13th at my home Pawleys Plantation, a hole many people do not care for.