We managed to get most of these (as you know) and after moving into the building there was a discussion about the facilities on some mailing list where someone said, “Wow, I think I could actually live here!” whereupon I knew we’d succeeded.
I highly doubt that productivity, from a quality perspective, increases significantly by just adding more hours. People still get tired, restless, bored or just want to do something else for a while. It’s natural and should be a part of life (and work). Just sitting in the same place, doing the same thing while a massive crew of people cater to you is not necessarily going to foster new ideas or an interesting work culture.