You're not seeing the forest for the trees. I'm not talking about moving backwards; I'm talking about iterating on the current design until it's perfect. Let's use another example. VR is a new way of interfacing with display technology; imagine Apple decided to sell laptops with VR displays rather than traditional ones; I'd guess most users would be up in arms over the shift to a drastically new technology that simply doesn't work for them. This is your example of "moving forward" in a different sense -- we don't need VR, the display works, and we simply improve upon that technology. The same goes for the keyboard. While a much more hyperbolic comparison, this is exactly how I perceive the switch to the 2016 design. It is a drastic departure from a keyboard that was near perfect and just needed some love and attention.
You seem to be stuck in the "always innovate" camp, and that's a dangerous place to be. As I said many times, not everything needs to change. There are things that "just work" and those things can remain the same. Work on improving the REST of the device, I'm all for that. But there is a time when you can leave well-enough alone.