Comment 47 for bug 168164

Font size in the GUI should be displayed in whichever units the user wants, with the default being points and not pixels, as that is what 99% of all drawing programs use. However, there is no reason that the internal font size cannot remain in px. It only takes a tiny bit of GUI related code to convert from pt to px (or em to px), and that will not affect any other part of the program. That should resolve the (minor) usage issue without introducing any new issues. (My current solution is to do it outside the program - I have a conversion table of points<->pixels on a sheet of paper. Not very elegant, the program should do this simple conversion.)

Regarding the lack of a defined SVG viewBox, that is a separate issue and should be in its own thread. Inkscape should not let such things default to "whatever the reading program wants", as, in my experience, it is inevitable that some program will use an incompatible default. (Example: EMF import of lines with zero width - Inkscape has invisible lines, but some other programs show lines with the minimum visible width.)