I briefly tried the keyboard on a 2016 12-inch MacBook in an Apple Store and didn't like how "shallow" it felt relative to other Apple keyboards I've used. I hope the 2016 MBP's keyboard isn't like the 12-inch MacBook but it's not a deal-breaker.

I'm not excited by the Touch Bar but I'm not concerned about it either. I think it will take some time to see how useful it is and how committed Apple is to it (e.g. will it appear on a keyboard peripheral soon). You don't lose function keys entirely, you can always call them up by pressing in the fn key.

The Touch ID is available to developers, 1Password will support using it to unlock a vault instead of entering your Master password, same as they do in their iOS app.

I don't care about them being thinner but appreciate them being half a pound lighter. The was achieved, in part, by having a smaller battery, 24% smaller in the 15-inch model, but they claim the 2016 model can get 10 hours of use, vs. 9 hours with the Mid 2015 model.