I have to agree with the Beloved One - particularly Bel Air. That flat-stone workon the front nine is absolutely hideous.
But here is the one that screams the loudest for change:
#12 NGLA. The tee belongs behind the 11th green or far to the left, not to the right where it is today. Have a look sometime at that line of yawning bunkers from the correct angle. Also, the putting surface is just a silly anthill.
Nothing about the hole works, and although I understand there is a safety issue with the 7th fairway, my vote would be to rip out the bunkers on the left and rebuild them further over and try to parrot the shot as it was designed. Obviously, the splash bunkers on the right side will not be at the same angle as before, but the slope of the fairway makes it close enough.
As for the putting surface, if you go into Karl's shed, on the wall is a plasticine model of each of the holes. #12 has a distinct punchbowl and looks to be far more interesting that what is there today. Nobody on this planet is better at fixing the course than Karl, so if I were king, I'd say he ought to make major modifications to it, making it as close a possible to Macdonald's vision. As it is now, it is the only nondescript hole on the course.
One other hole that looks terrible: #13 at SGGC. This Jones (I think) redesign is as bad an abberration as GCGC #12. The arrangement of the bunkers is too symetrical and they lack shape besides. Lifeless ovals . . . . what a shame. Also, the putting surface contours do not match a single thing on the rest of the course and look awful.
Okay two more: #15 on Olympic Lake. There is no remodeling this abortion. Just get a bulldozer and start over again. An abrupt hump on the right side of the putting surface was removed last year, but the contouring does not begin to match the rest of the holes. We have either multi-tier greens: #4,7,8,11 or severely pitched ones. The only oddity is #1, which is a collage of complex movements that would take 500 words to describe.
#15 needs to be shorter, with a smaller, more intimate tee. I would draw inspiration from #10 at WF West - but on a more appropriate scale to the length of the hole.
Final thought: #4 at Lake Merced is the worst hole I have ever seen designed by a serious architect (so, #1 at Peninsula CC and #13 at Sequoyah don't count
).
Move the tee to the right to give it some shape (Bo links and I played it that way and it works far better) and blow up that awkward green. The approach - often from a hanging lie - needs to present a green with some ground game options. A Triple-tier monster, jammed into a hillside and fronted by an enormous carry bunker, is not appropriate for the length of the hole. He put in a silly looking chipping area to the right of the green, but the entire composition is terribly forced and even worse than the hole it replaced. A complete failure in my opinion.