It used to bother me that groff doesn't support Unicode (as far as I can tell) but then realized that all I write is English so why am I fetishizing Unicode? groff will get me any accented character that I would realistically need.
So this is my setup using MOM macros for nice typesetting.
But I fully agree on your last point, in the end I seldom need the Unicode universe for most of my documents.
[1] https://www.man7.org/linux/man-pages/man1/preconv.1.html [2] http://www.schaffter.ca/mom/momdoc/appendices.html#fonts
No way, you're right. And of course it has a very detailed and well formatted man page. The one for troff even has tables.