Even the greatest golfers in the world fear OB. It influences their thinking and their choice of shots in a way that a bunker will not, whether surrounded by short grass or long.
OK, so let's say that a certain pro fears o.b. enough to aim 25 yards away from it, no matter what. So now they have to aim at the left edge of the 2nd fairway and hope for the best, instead of aiming down the middle of the fairway as it was before it was moved. Is that really a great set-up?
+1
There are a few holes at Merion where OB plays an integral part of the strategy of the hole. 15 of course stands out, and its angles make the OB work as a hazard in my opinion.
(of course cutting the tops off the traditional wooden pilings and then putting a fence 4 feet past was one of the odder things I'ver seen in golf "setup"-to say nothing of the SHEER WASTE of such an action....but I digress)
A few others such as #7 have it pretty tight with no fairway left which impacted "strategy" by most players simply hitting a shorter club to find the fairway and not bothering to challenge with a longer club. Not bad, just pretty common and something a lot of courses face.
These are features members face to some degree every day at Merion, and are part of the charm, architecture, logistics, and history of the place.
I thought #2 preOpen would've been the perfect compliment to #4, being reachable with the further left one drove the worse the angle in, and a slight chance of an errant shot going OB. Somebody at the USGA just coudn't stomach a potential "easierish"par 5, despite the fact that there was already a difficult unreachable one ahead, unless they messed with that setup as well (which they did making it the ordinary one on day 4)
In short, Merion has a few holes hugging OB due to its history, geography and intimacy that seeem to work very well.
Just not sure it needed another one.