There are quite a few tour courses that the pros rave about that don't get much, if any, love from this group. My guess is the pros like Copperhead because it can be very difficult, but it remains predictable. Not much in the way of quirk or awkwardness. I don't recall the greens being overly contoured, with 15 being a notable exception.
After attending the event while living in the area, I was looking forward to playing Copperhead. I had heard of the sand ridge that runs from Innisbrook's location up through the central part of the state, but I was still surprised at the nature of the property when seeing it for the first time. As Bill McBride stated earlier, there is plenty of water on the course, but visually there is little clue that you are in Florida.
Unfortunately, our day at Copperhead was canceled by Tropical Storm Barry. Before I was able to return, we'd moved.