Do you use the TouchBar for anything useful?

No. I only got it for the 2 extra thunderbolt ports.

I use to accidentally trigger siri all the time until I finally removed it. Now I accidentally trigger the mute/unmute button all the time instead.

The fact it changes based on what window is focused hurts it more than anything for me, keyboard brightness and media controls use to be immediately available no matter what I was working on now it's contextual. If I have to focus to iTunes to change the track I might as well just do it in the UI.

I like the one-touch volume and brightness sliders. I have in the past run custom bars with BetterTouchTool but it did not feel polished.

Where is built-in support for the menu bar, and perhaps a CMD-hold for sysinfo on the right (time, CPU, memory, energy, drives, network) and contextual information (transcoding, SSH session, lint, Xcode simulator stats, etc) on the left so I can go full-screen on more apps? I thought that was where it was going, but it's been stagnant since release.

Apparently a "pro" system means quicker access to emojis, browser tabs and predictive text.

Mine broke after a few weeks. Now I have to use the menu item to adjust volume, but other than that it hasn't bothered me.

Nope. I accidentally log out and have to press the top right corner 2 or 3 times to hit the escape key.

Yes.

Nope.