That's a fascinating idea, but I wonder if code written in Go or similar language would make for some gargantuan and awful-to-read Lisp, and possibly vice-versa

That's a fascinating idea, but I wonder if code written in Go or similar language would make for some gargantuan and awful-to-read Lisp, and possibly vice-versa (Go with a ton of functions that are all only a few lines long. Sounds ok to me, but very different from any Go code I've worked on that I didn't write :-D).