maintaining the waste areas in the form they were during the U.S. open has to be a continuing expensive PITA. I'd guess it will gradually become either more bunker-ish or more grassy. And because I've met lots of golfers in the #2 target demographic and very, very few of them thought the U.S. Open fairway looked acceptable for a high-$$$ course in the NC Sandhills.
Brent:
I did spend some time with the superintendents at Pinehurst a year and a half ago, and they reported that the spraying and weeding of the native areas, while labor intensive, was about 50% less expensive than watering and maintaining the grass they used to maintain there.
Also, while #2 looked quite splotchy from the TV towers in June, there are six months of the year when it looks perfect [most of the grass dormant] and only a couple of months in the summer when it gets the splotchy look, and those months are not the prime season at the resort.
So, the only place I'll agree with you is that the spoiled American golfers paying $400 per round might force them to do the wrong thing.