I didn't get the last reply for some reason, only saw it on the issue
tracker. Would be nice if i could import it somehow, but the issue
tracker GUI doesn't seem to have an option for that.
In any case, thanks for the feedback! ^u^

Attached is an improved patch list.

I'm pretty sure I incorporated all feedback, except for the guile-json
part. I have no idea how it'd pose any issue in practice and if it
does, that seems like a deeper design issue. Reimplementing JSON
encoding because Guix can't find its libraries doesn't seem like the
right solution in any scenario.

The docs were indeed lacking, I added a more information and fixed some
plain badly written parts.

The solution to the socket ownership issue turned out to be much
simpler: Shepherd has a #:group option.

One issue I encountered while guix lint-ing the packages is that it and
refresh could both identify what the new release is but refresh
--update seemingly never worked. Not sure what's up with that.