Good question. What I think the USGA, and some related organizations, deserve credit for these days is their willingness to take major tourneys to both new sites of some architectural merit (Pacific Dunes being a primary example) or older courses where length wasn't a huge issue in terms of the field (Prairie Dunes for both women's open and senior men's open, Salem a few years back for the senior men, Newport this year for the women, Chicago for the Walker Cup). I think it's been good, generally, for golf and golf architecture to have these courses televised, and allow folks to appreciate the work of Ross, Maxwell, McDonald et. al.
I still am biased toward hosting the US men's open (and women's, for that matter) on a traditional course -- and looking back, the USGA held the men's open only three times on courses that were widely/somewhat criticized: Bellerive in '65, Champions in '69, and Hazeltine in '70 (Hazeltine was absolutely villified by not just Hill at the time, but a great number of folks). The USGA I think deserves more credit than it generally gets for its willingness to hold the Open at older places like Pebble ('72), Shinnecock ('86), Pinehurst ('99) and Bethpage ('02) that a) were unproven as US Open courses and b) proved to be great successes.
I do like the idea of Kingsbarns hosting the Open. Birkdale and Turnberry were relatively new courses (by British standards) when they first hosted the Open.