Ground Control To Major Tom,
Those are great questions, and they are precisely the ones that I asked of Mr. Marzolf at the media day. What a genial, generous man he is! He did an interview with me for BuffaloGolfer.Com about five months ago, and was very free with his time and answers. He did move to Pittsburgh during the pandemic, so that he could be on site every day of the project's conclusion.
Fox Chapel is a 1A to Oakmont's 1, in the Pittsburgh area. That is not meant to denigrate either course. Oakmont is that incredible one-off by an amateur architect (Fownes) while Fox Chapel is a wondrous collection of template holes plus unique ones, and that one green left waiting to be returned. It would be spectacular.
I would say this: a club is responsible for its property, and its committees dictate to the retained architect precisely what they want from a project. If they allow any architect to tell them something else, the committee is culpable. In this case, we have Raynor 2.0, in a way that allows the course to challenge elite players in the 21st century AND play as an interesting daily club course for a fortunate membership.