Well, yes and no. For me, Face ID could definitely get much better (which iOS 12 has helped a lot). I welcome improvements regarding speed, landscape, and more extreme viewing angles. This will make the experience much much better. Similar to the jump from Touch ID version 1 to 2, which was huge. My main point in it being incremental though is that all smartphone features are superficial at this point. We pretty much have everything we could want in our smartphones. The main reason I choose Apple isn't because of features year after year, it's because they provide the best overall platform when it comes to performance, security, privacy, ecosystem, apps, and support.