Maybe I am missing something here but if you compare font sizes between Mozilla and Netscape 6x/7x, they are very different.
For example, in Mozilla mail, the fonts on the mail folder names are so small that they are difficult to read. In Netscape they are fine (approx 12 pt.). There is also no way to adjust this display size in Mozilla that I've found. The font size/type mods only affect web pages that are displayed, not anything else within the app. I have a friend that uses Mozilla that has poor vision and he is getting frustrated at the inability to change the font size. Am I missing it, or does this feature need to be added?? Regards, Jason G.