Michael,
I've only played it once, but I had a similar reaction after playing it. I thought there were a couple holes I didn't like (i.e. #9 was awkward i thought), but overall, I've lived in MI almost a decade and hadn't heard much about it up till that point. I remember walking off the course and telling our host...how the heck is this not a top ranked course in MI? and top 100 US? Its a great property and when I played it, it was firm and fast. Interesting tee shots, and some cool greens. While I see what Tom Doak says regarding the greens, there are a few gems out there in my opinion...forget the hole, but they long Redan style par3 has a great green, and the 18th is really really cool and can leave some insane putts.
Thanks for reminding me....need to get back out there...great course!