I love this except for one thing. I want to be able to scrub videos. Especially on YouTube where it helps me skip ads. All of my googling could not find me a way to get a video scrubber, but I found the option to Toggle System Touch Bar UI. That would work for me. I just wish it were a bit more convenient.
Is there a way I can toggle it with the Touch Bar? or toggle it with a keyboard shortcut? anything easier/quicker than having to click the option? I want to be able to quickly toggle back and forth when I'm in certain apps and such. 
edit: there are other things I like the system Touch Bar ui for as well.
edit: I found it. command option shift 0. there's got to be a better way?
edit: GOT IT!!! I went to trackpad and set a 4 finger tap to toggle the Touch Bar ui 
perfect