Looks like a reasonable solution. :)
They are all important. Backticks for things like markdown, reStructuredText, ES6, and shell scripting. Tildes for file paths and regex. ESC for Vim keybinding emulation in many programs.
The ESC key on the touchbar doesn't look like it's in the right position, but maybe people will be able to retrain themselves to feel for the left edge of the touchbar with the little finger and then tap with the ring finger.
It doesn't seem ideal, but I'll try it at a store before making a final opinion. I'm still relieved that I didn't switch from Linux to Mac though. :)