I've been using BTT extensively for the past few years, mostly with trackpad gestures. I have 20+ shortcuts for different software, which usually copy existing 2nd tier shortcuts (e.g. shortcuts not used very often, but just often). For instance I have gestures for opening and closing tabs in Safari (while browsing, you usually use trackpad and not keyboard, so it's faster).
I tried. I really, really tried liking the TouchBar. I installed several preset layouts for BTT and used them several weeks. I have to admit that BTT authour is a genius and he pulled all the possible functionality out of the thing.
But he couldn't fix the one thing that is wrong with the TouchBar - it's an ergonomical disaster.
After a few weeks I discovered that I don't use this stuff on TouchBar, because it simply takes too long and takes the focus down from the screen.