All,
I love the idea, but unfortunately, it will never work.There are a considerably greater number of issues (local, state, and federal law & code, along with associated business practices) that serve to prevent a "Muirfield" model from successfully working.
Assuming the tax-related issues could be hurdled, issues of liability, handicap-access, zoning, associated membership entry issues (gender, race, religion, etc...) all would conspire to exclude most of the US Top 100 ultra-private courses from participation. The best that is going to happen is further expansion of charity-related outings and membership-sponsored unaccompanied play. Current memberships can regulate and fine-tune such access through those channels and maintain firm control.
Only with a concerted lobbying effort at the federal or state level (and I can't see that happening in our lifetime) will public access change.
Darren,
You went to Harvard, and if you made varsity for them, you played the Country Club and maybe an occasional round at Myopia Hunt...could you see the memberships at any of those places alowing anyone labeled John Q. Public onto their greens?