Heh C-+ / C-- actually work, at least in my emacsforosx, have no idea when that started working, but nice, one complaint off my list, but its not hard to imagine many more to make emacs more user friendly

Note that these keys zoom, they don't change the font size. Useful for displaying, not useful if you're looking to export or print text.

Well, yeah. The whole point of a text editor it to edit plain text.