I have spoken at length with Bill Coore about this issue. In his opinion, Mike Davis of the USGA and Pinehurst have "really gone out on a limb" for this US Open. As he notes, Pinehurst was certainly not getting any complaints regarding its previous US Open championships, and the resort was doing very well, thank you very much, with the condition and setup of the venerable No. 2.
How will the course play for the US Open? How will the field respond? How will TV viewers respond? These are incredible unknowns for such a known property and championship.
Will brown become beautiful? Who knows. But if we are indeed in the "Minimalist Era," as mused in another thread, then this US Open is in fact its most significant popular moment.