I also think this years US Open will be a test to see if no rough works in a major. There are spots at Torrey that if the rough was cut and its fast and firm, a miss hit ball could down into the ravines.
Imagine #4 with no rough down the left side. That's an intriguing possibility.
Playing devil's advocate for a second, when would this reno/upgrade take place? Mickelson's North Course renovation is going to start after next year's Farmers Insurance Open. There is plenty of time, but they would have to allow for that.
I'm not saying Torrey couldn't use some serious architectural tinkering, but I think part of the reason the USGA is going back to Torrey is because how successful the '08 setup was. On the other hand, Pinehurst No. 2 went through some significant changes since '99 and '05.
Great, now I'm debating myself...