Not a new idea, Tokyo Narita has had holes, benches, vending machines etc for ages https://www.narita-airport.jp/en/fun/view/ The only thing they could possibly do more are cabins for the cold in winter. Still low cost and makes the airport's position on photography clear, friendly...
I was just thinking about Narita and then I saw your post come up. I've spent a lot of time there, I used to fly through Narita and I had to wait six or seven hours for my next flight. My body was at night time biologically, and after a long flight it was a very hard wait. Until the time I found that open air view deck. Fresh air, daylight, all of it made it easier. And I noticed the photo-friendly fence too. Gave me something to do.
