Mr. Foley, I as well am a big fan of Arcadia. It is just about unbeatable in the "WOW" factor category. The views of Lake Michigan are absolutely unbeatable.
56th on the Greatest in America list was a little high in my book, but it is certainly a great public course in the United States. The changes they made will make it more playable for the average golfer and that is definately the target market.
As for courses that are better, if you haven't been to Forest Dunes Golf Club, Roscommon, Michigan it is well worth a trip. It is a Tom Weiskopf design and was supposed to go private this year. However, in checking their website, it appears that they will be public again this year. Forest Dunes has a very clever routing and was compared to both Pine Valley, which fits, because of the waste areas and sandy pine forest terrain, and Augusta National, because of the shape and style some of its bunkers. I will admit, the Augusta comparison is a bit of a stretch.
I think they are having trouble establishing a membership. However, in speaking with the head pro last fall, once they get a certain number of members, which was quite large if I recall, they are planning another course which he told me was to be designed by Coore and Crenshaw. If Forest Dunes can establish a membership and get that C&C course, it would make for an amazing private destination. But as far as I know, it is open to the public again this year.
But back to Arcadia. It certainly is a great course, and I have not been to Bay Harbor in Northern Michigan, but it to looks to be worth the trip. It is a group of 27 holes that has some views of Petoskey Bay and would also fit your palet. Not as linksy, not even the links nine, as Arcadia, but also has the Quarry and Preserve Nines to suit any golfers preference.
So in conclusion. Arcadia Bluffs, Bay Harbor, and Forest Dunes. These are some destinations that would be worth the trip.