Interestingly enough, you could purchase a $46,000 bottle of scotch, Chinese liquor, packs of ginseng, and fish oil capsules all in the duty free shop. Shopping aside (I was pretty bored waiting for my mom to finish buying cosmetics) there's a great pair of interactive displays on either side of the terminal, which display images from different destinations along with a soundtrack. There are some lidars hidden in the art-- I have a feeling they are the old security sensors that used to be mounted in the terminal.
We ate lunch at Chaya, though in hindsight, perhaps trying out that farm-to-table restaurant or eating an Umami burger would have been tastier (there wasn't much in the way of variety, though it was definitely a step up from the last Japanese restaurant that was in Tom Bradley).
The miff I have with this beautiful modernistic minimalist airport: the announcement speakers suck. You could barely hear what the attendants were saying.