Hi,
I hope you agree that it’s worthwhile to make all these thoughts and
that it would be good to have such functionality in an easy-to-use way.
I do agree very much. It might seem like a minor thing, but I remember
when I used LilyPond for the first time many years ago, my first
reaction was: The notes look nice, but this English text on an otherwise
German score looks looks very unprofessional and I do think the out of
the box impression counts. My impression was: That looks like any
freeware would do.
Fortunatelly, I found out quickly how to change the tagline and I use a
custom one since then. But I support a convincing default appearance in
the users language.
Couldn't the language of the environment be used here? I get help and
log messages in German on my system why not the tagline?