Tom:
I don't how much time you've been able to play in the last 4-5 years among the newer courses, but the competition is indeed tougher. The state listings, particularly in the most competitive of states (i.e. NY, NJ, Ohio, California, etc, etc) have indeed intensified as older courses are now going through the process of restoration, modernization, etc, etc). Couple that with some of the better public layouts that have entered the fray (i.e. Pac Dunes, to name just one).
It is no longer an automatic that "x" course which has always been rated will continue to be rated.
I've said this before that you can certainly expand ratings to include a top 200, but one need not specify that course "x" actually finished in "x" position. More likely, I'd like to see GD in a listing of ten as they previously did.
What raised my ire Tom is that certain courses for a top 5-10 in a state (i.e. Ocean Hammock in FL, The Kingsley Club in MI) were omitted. Clearly, when you start to go beyond a top 10 in many of the states all you are doing is going to be spinning the 19th hole debate over and over again. But, in the more competitive states the distinctions are going to be much more demanding because the depth of courses is that much more intense.