Ed,
Toughest pins would depend on what you are trying to do: get the ball really close on your lengthy approach could be the back center, which falls away quite fast but allows an aggressive chip uphill, and anything on the crest of the bump in the middle leaves a delicate recovery shot. It is a generous sized green and there are a lot of great pins -- variety for a couple of weeks, really.
Tom Paul,
Yes, there is definitely some high intensity to the golf course and that goes back to the earlier comments about "sensory overload" -- I think there is a very good rhythm and flow to the course so that the intensity doesn't continuously sustain itself and it makes the golf work; that was definitely one of the biggest challenges I had on the project.
As to the 13th at the Downs, no, not really, since this green has two distinct tiers, high left and lower right, with the separation on a bit of a 1 o'clock--7 o'clock angle, depending on your position on the fairway, of course. Whereas the 13th at CD has the cavernous bunker left of the green, the 2nd at Greywalls has a large ridge that is all fairway height, so a ball will release down to the green, probably to the lower level. The approach directly in front of the green is a deep bowl (turf) that bleeds out into the ravine, requiring an aerial shot at the green or a bump/running shot to the left to feed onto the green. There is also a very narrow ramp between the bowl on the right and ridge on the left that can be used (Brian or others will probably tell me I'm nuts to even call it a play since it is so small, but think of it for recovery options also instead of just a long approach).
Brian, thanks for the other comments -- you have had as many opportunities to play and study the hole since it has been open as anyone, so that is great to hear your insight.
Mike