Mark,
The club (not the USGA) flipped 3-6 with 12-15 for this tournament, in hopes of making the back nine tougher. They are hoping to attract the 2020 open (which I think should go to Myopia for linguistic reasons) which is the 100th anniversary of their historic 1920 Open. The course has been lengthened, playing to 7,143 for the seniors (although not all yardage was used every day) but even then, it appears there are some back tees that could get it over 7300 yards for the US Open.
As you may know, holes 1-3 and 10-12 parallel each other, so it was a simple crossover after 2 and 11 to the two par 3's. Then, old 7, now 16, played right up to the parallel 8 (Hinkletree hole) and 17 so they flip back.
A few walks, but then, the old walk from then 3 to old 4, and a big walkback to then 5 was still big, as was the walk from 6 to the historic Ross 7th. Historically, the holes Fazio built (then 3, 5, 6) were the ones that started the Ross Society, given their poor reception in 1979. They still look out of place, but the bunkers have softened somewhat into more of a meld.
I spent Saturday watching the tourney there, and am still impressed with the course and most of the renovations. They kept many Ross fw bunkers, and added back tees and scattered bunkers down the fw to bring them in play. Art Hills added the fw bunkers, but I don't think they changed many if any greens. You can tell the difference in detail and scale of some of the original Ross bunkers over the Hills bunkers, which are bigger in scale, and slightly more bland. They are more practical, and do keep the typical Ross steep grass faces, even if not all the original Inverness bunkers really had them.