Terry,
Merion has always been noted for having difficult rough.
So has GCGC.
The difference is that GCGC has very generous fairways.
Given the choice of playing Merion as you saw it yesterday vs GCGC, on a daily basis, I'd opt for GCGC 90+ % of the time.
But, I'm sure there are some that would enjoy what I perceive is a torture test for the average golfer, more than I.
Mike Davis doesn't have unilateral authority to change the golf course at Merion.
Merion and only Merion has the authority and the means to change the golf course.
Merion, to protect it's legacy and current day relevance, narrowed the fairways, added length, shifted some fairways, and may have regraded some fairways and then put the rough on steroids.
I happen to think that once the decision was made to return to Merion for a US Open, that you couldn't leave the course as the members play it.
To my recollection only SHCC and WFW come close that status.
If you review US Open setups over the last few decades in conjunction with distance over the last few decades AND you want to protect/defend par, was there any other choice other than the ones listed above regarding what had to be done to Merion ?
Doesn't the venue dictate the setup, not Mike Davis ?