Ability to use includes in font.xml

I realize this will likely be a very low priority for most, but thought I’d throw it out there. Would it be possible to add the ability to use includes in font.xml? I have a number of fontsets in my font.xml, and each contains an identical set of font definitions for symbols (font icons). It would be great if I could move these to an include so I don’t have to maintain each one.

Thanks!