@inkscape ...
But as a prepress professional, I need e.g. “box” editing (crop box, trim box, bleed box), reliable color conversion, downsampling and PDF/X checking.
There are commercial alternatives, even on Linux, like PDF Master Editor and PDF Studio Pro, but they’re lacking in these features.
I do most of my typesetting with #TeX (#ConTeXt) and love GNU LilyPond, I can code in a few languages and use shell scripts a lot. But for cover design or image-centered layouts I use Affinity.
@fiee That sounds like you want to give Scribus a try (if you haven't yet).
As for Inkscape, I've (Moini) only recently read those terms in the devel chat channel, so maybe there's hope :)