Won the lottery today and was in the 3rd to last row of the orchestra. The mezzanine overhang didn't cause any problem whatsoever, I could see the top portion of the set without obstruction.
I saw the play at the Helen Hayes, and have also read it a few times since. The production is still as magnificent as ever. I cannot wait to return again and again to see this!
An observation -
Physically, the set doesn't fit in the Schoenfeld stage perfectly. There's about 2 feet of space on every side of the set, and then beyond that is a faux proscenium arch they've constructed/designed specifically for this transfer. It's black with bricks on the sides, and some interior plaster board on top. The set kind of feels like it's floating in a black abyss. The downstage edge of the set does not jut out nearly as close to the audience as it did at the Helen Hayes...I'm not sure why they didn't bring it a foot or two closer into the house, and maybe gotten rid of the first row.
The sound design was also not nearly as loud as it was at the Hayes. I was never jolted by the thumps...whether or not I was expecting them, they were still much more subdued.