Wayne,
I too played with the head pro a couple of weeks ago. I am fairly sure he said that they had over 200 members, a number in the national category, and a couple emeritus (I think Dye and Ed Sneed).
The club was very active on the Thursday mid-afternoon we played. We started on 6 to avoid several foursomes that had gone off, and we went through a few groups. I am told that members now have a day or two a week to bring up to seven guests, whereas before they were limited to just three.
In no way did having golfers there detract from the experience. Back in the late 1970s, a member friend used to complain that he had a hard time getting a game. That does not appear to be the case now, and I had the great pleasure of meeting an extremely nice member who joined us for a few holes mid-way in the round.
Without a question, if I lived near Columbus, TGC would be at the top of my list of places to join. Wolf Run northwest of Indianapolis would be my choice there (much better than Crooked Stick, in my opinion).