John,
I agree, Lehigh is impressive. And as the title of the thread suggests, it's hard to find a weakness in its design. There are some thrilling golf shots and wonderful greensites there as the routing goes back and forth between rolling hills and creek valley.
The club undertook a lot of work a year ago paying off in the look and playability of the place. Tees were rearranged, trees removed, bunkers restored, and paths rerouted, which all polished up what was a great classic course to begin with. A big congrats to John Chassard and Ron Forse.
re: the 11th hole, I think the awkwardness of the hole's topography actually works in its favor as it places an emphasis on the tee shot, giving the player who finds the right side of the fairway options in an easy lay up or a chance at the green. If you don't find the fairway, the layup is no gimme and a short par-5 becomes difficult with a carry at some point over the creek to a perched and sloped green.
And I'll say this, in my 3 years working in Philadelphia, I never had more fun than my four months working at Lehigh.