Having played there with the GCA party yesterday and having carefully considered whether my family connection leads to unfair bias I'm still convinced it's a 10.
The par 3s are all the same? Not yesterday. 4 and 16 are similar (but both very good). 13 was playing from the front tess and was a short uphill par 3 (in any event the complaint is that they are all raised greens, with drop offs on either side. 13 isn't, if you miss right or left you are either in a bitch of a bunker or on the same level as the green or higher. It's a lovely par 3. 7 played at around 145 yards (which it almost always does for member play and the challenge here is the green. With a front pin position this green has a very narrow entrance so most shots on the green will leave a long downhill putt.
The par 5s are both good holes, 17 is, I think, a great one, demanding strategic decisions on the tee and with your second shot. The par 4s are what really makes the course and they are a great selection of par 4s, demanding thought on every shot.
It's not a striking piece of land, admittedly but to say the fairways have no shape is simply wrong, 2, 6, 8, 9, 11, 12 and 17 all have significant movement in the fairway that adds to the way the hole plays.
The clincher, though, at Muirfield, is the architecture. This is a series of brilliantly designed holes. Even some of the less feted holes are brilliantly conceived. 2, with the fairrway feeding the ball left, apparently towards the wall. 3, with the long mounds narrowing the fairway 70 yards short of the green, which demand precision off the tee and deceive you into thinking the green is immediately behind them. 5, a straigtaway par 5 but any approach missing the green right is in serious trouble (playing foursomes with Kelly Blake Moran we surrendered having visited the greenside bunker on the left of 11, then one of the greenside bunkers intended for 15 itself!) 6 and 8 are both very strong par 4s, 9 is a very good hole. I could go on but I think it's better to say that I don't think there's a weak hole on the course.
The bunkering is a treat (I paid more attention to the bunkering yesterday than I ever have before having heard Tom Doak tell Philip Gawith over dinner on Monday that the bunkering was the thing to look out for). There is a variety of style and bunkers can be strategic, penal or simply there for deception.