To make it clear: I have prepared 3 files, the first at 150dpi, the second 300dpi (without changing anything else), the third at 300dpi, with font setup changed so that layout matches the page layout at 150dpi. Actually "all" I had to do was to double the font size for each elements.
BTW, this made me find a little bug: when you try to change the font used by default on some element, the initial font size is properly reflected in dialog box, but not the font style (normal/bold/italic).
BTW, this made me find a little bug: when you try to change the font used by default on some element, the initial font size is properly reflected in dialog box, but not the font style (normal/bold/italic).