Correct me if I'm wrong, as I haven't played CC of Charleston. My understanding that a golfer who has a below-average bunker game has a chance of never finishing the hole at 11 at CC of C. To me, this is extreme. Personally, I love to see wild holes, and I'm sure I'd be thrilled with 11 at CC of C. However, it doesn't make sense to apply a double standard. The number of tiers on a green does not equate with playability in this case.
1 at Yeamans Hall, by the way, has three tiers (not 6) and is a pretty standard Raynor double-plateau design. The false front is probably more extreme than on most double plateau greens. However, the green is eminently playable, and it doesn't cause pace of play issues. I'm really not sure what the problem is. The green is beautifully constructed and very fun to play. I certainly wouldn't want one on every hole or every course, but if you throw one in there like at Yeamans Hall, you have a very unique start to a very unique round. Furthermore, the hole itself does not place high demands on tee-to-green shotmaking, so it seems reasonable to have a wild green as its defense. Having only played just a few 'recognizable' courses in America, it is far-fetched to say that 1 at Yeamans has the worst green of all of them. It certainly one of my all-time favorite greens on my all-time favorite opening hole.