Bill:
I think they did shave the ridge down a bit. Its still noticeable and definitely divides the green into left and right segments, although the recovery putt from one side to the other is now a lot more manageable.
Matt:
I agree with Mike that CB and EH are very different experiences, but perhaps not for the reasons he notes. Both are tough walks, but EH in general is a much flatter site than CB. Both have plenty of width, but where CB has vast waste bunkers guarding the fairways, EH generally has tall prairie grass (the rough wasn't especially nasty as of three weeks ago, but I could see the USGA growing it in to an almost intolerable level). CB seemed to me to be a course that placed a premium on distance and accuracy off of the tee, due mostly to the holes with forced carries or canted fairways. EH may be a bit more forgiving off of the tee, but there are a few holes where being in the right spot is imperative. CB is also a much more compact course, with views of multiple holes from all over the course. EH is a bit more spread out and other than the cross overs from 7 to 8 and from 17 to 18, the nine hole loops cover different parts of the property.
I don't necessarily agree that EH is an aerial course. I think you could play the ground game on a number of holes, including 1, 3, 5, 10, 11, 12, 16, 17 and 18 (where a draw to a back left pin is a very fun shot). There are definitely differences in the turf and the ground, but under the right conditions EH can play very fast and firm.