Tom,
I'd love to see them encourage preservation, but you can't do that on one hand and then encourage significant changes (green leveling, new bunkers, narrower fairways, etc.) on classic courses hosting their championships.
As he often does, I think Mike nailed the issue here for the USGA. While the comparison with tennis is often confusing, I do reference this era of tennis:
"1978 - Spearheaded by United States Tennis Association President W.E. "Slew" Hester, the US Open moves to the hard courts of the USTA National Tennis Center in Flushing Meadows, N.Y. Pam Shriver, 16 and armed with a 110-square-inch oversized racquet, reaches the women's singles final, where she falls to Evert. Playing in his fifth straight US Open final, Connors dispatches Borg in straight sets for his third US Open title.
The victory on the DecoTurf II hard courts gives Connors the distinction of being the only player to ever win the US Open on three different surfaces (grass in 1974, clay in 1976 and hard in 1978 and later 1982-83). Total attendance at the 1978 US Open exceeds 275,000, setting a new tournament record. Total tournament prize money exceeds $500,000."
I don't think Connors gets enough credit for winning 3 Opens on 3 surfaces. Now with the move to Flushing the US Open tennis has become a 1 dimesional power game on "hard courts." Tennis has settled in with the 4 Majors on 4 different surfaces.
Now if you look at the US Open, it is morphing into a balance of classic vs modern style golf with Bethpage (modern due to a monster renovation and continuous tweaking) vs Shinnecock being a fairly similar course to the one that Ray Floyd won on.
Now The Open moves to:
Torrey Pines Golf Course (South Course)
San Diego, Calif. June 9 - 15, 2008
Bethpage State Park (Black Course)
Farmingdale, N.Y. June 15 - 21, 2009
Pebble Beach Golf Links
Pebble Beach, Calif. June 14 - 20, 2010
Congressional (Md.) Country Club (Blue Course)
Bethesda, Md. June 13 - 19, 2011
The Olympic Club
San Francisco, Calif. June 11 - 16, 2012
Merion Golf Club
Ardmore, Pa. June 10 - 16, 2013
I would argue that Merion, Olympic and Pebble be set up with a "classic era" setup where the US Open is focused more on shots into around and on the greens. The USGA SHOULD EMBRACE the green speeds on Merion 5 and 12, and not touch those greens. The course is defended at the green and in the case of Pebble and Olympic to a lesser extent by wind. Irons and ball placement off the tee would be a part of the equations in these US open years.
I would personally classify Torrey, Bethpage and Congressional as modern courses from the classic era. This would allow modern courses from the modern era such as Erin Hills to now be put into the mix. Here driving and length would be a key ingredient in winning the US Open.
Back to Mike's point, the USGA is mainly about running tournaments with the US Open being the Mother Ship. If architectual preservation is not embraced at the presentation and setup of the US Open, any attempt will end up being a exhibit at Far Hills that 97% of the golfers will never see.