With apologies to those who have not played Merion.
I made a quick visit to Merion yesterday specifically to see the 12th and 15th greens - both of which have been "softened" regarding their pitch in certain places.
BACKGROUND: Some months ago, I started a thread regarding the planned changes referred to above. I approved (then and now) of these changes as one of my pet peeves is Golden Era greens that were built to "stimp" around 6-8 and are now simply ridculous as mower technology and agronomy allows clubs to keep their greens at 12+ (or higher). If you can putt off of a green, it's too damn fast. As an idealist, Pat Mucci continues to call for clubs, Boards and Golf Committees to maintain the original contours of these greens and slow them down closer to that which the original architect intended. Being a more pragmatic observer of human nature, I have thrown in the towel that these clubs will ever do that, so I endorse the less-desirable, but inevitable Plan B - which is to do what Merion has done and remove the "clown's nose and windmill" effect by reducing the pitch of the greens in those places where reasonable putting has become impossible.
REPORT SUMMARY: Because my testing was done rather late in the day, and especially because the 12th green is quite shaggy for reasons I will explain, I believe the results are "somewhat inconclusive but appear promising" (based on my point of view, of course).
DETAILS: I took a putter and three balls to each green and, basically, putted for about 10 minutes from/to places that I know, from unfortunate experience, have become next-to-impossible in the last 10+ years regarding any ability to stop the ball within 5 feet of the hole - or, even, keep the ball on the green.
#15: To my surprise, the back of the green was left "as is" - the only work that was done was to raise the front (yes, to "flatten" it) so that approach shots wouldn't roll back off the green and downhill putts wouldn't do the same. Also, the effect of that "flattening" was to reduce the left-to-right pitch on a 30 foot uphill putt from 12 feet to about 6-7 feet. I rather liked that. However, the rear of the green is still impossible, IMO. I stood on the back of the green and DROPPED a ball STRAIGHT DOWN ten times. Every single one rolled down towards the middle of the green between 25 - 35 feet. Remember that iit was already late in the day and the greens were about as close to "less fast" as they will ever be. The good news is that, when I putted UP the hill to the back of the green, every single putt rolled back to me. Therefore, it will be impossible for a shot to stop up there UNLESS the ball makes it to the fringe. In that case, AMF because you are S.O.L. The further good news is that, because of the raised front, it is no longer a worry that a gently tapped putt from the back fringe will roll 30 feet past the hole and off the green (and down the slope). BOTTOM LINE: It is now easier to keep the ball below the hole on the approach shot. If a player mis-clubs, or catches a flyer from the rough - well, they probably will get what they deserve and that's alright with me.
#12 is still a work in progress as the entire green was pretty much rebuilt and the putting surface is rather shaggy. The front was raised and the back was lowered. I hit about 20 putts from different places that I've come to know all-too-well and it appears that putting off the front of the green is going to be unlikely - and THAT, folks is a very good change. Also, I think that stopping a side-hill putt within five feet of the hole will now be do-able. If I'm around in September, I should get a better read once the mowing and rolling is more normal than now.
Net - net, I think most of what I endorsed has happened given that Plan B is the only solution (anywhere) that will achieve (my) desired results.