Interesting read HERE, courtesy of Golf.Com, where you can read more of the nitty gritty.
“I don’t want people to lose a dozen balls when they play our course. Pinehurst is a great example of a course that’s tough for us but playable for everybody else. It gets players thinking, with options around the greens. We want lots of variety.” ~ Tiger Woods
Reading through the article, you’ll note Riviera, Pinehurst and St. Andrews as some of the more prominent examples that he’s using as a template of sorts to blend difficulty with playability in what really is his first “green light” layout… considering that his prior three projects have either been scrapped indefinitely or delayed because of the economic recession. With the economy finally showing some signs of a moderate rebound, there’s little reason to believe that his signature course El Cardonal at the Diamante Resort won’t be completed on schedule next summer.
Scott's Golf Blog 