Originally I thought that the Typography proposal was already covered by the scope of this site, but it seems clear the many following and committing to it don't think so.
From the discussion thread here: https://area51.meta.stackexchange.com/questions/4986/typography-area-for-stackexchange
"design and typography communities are typically separate"
"it would be nice to have a distinct typography site where knowledgeable experts -- who would't have the patience for the GD (or UX) site as it now is -- can contribute"
"expert typographists will seldom be designers, and more likely be linguists"
..it is clear that there is at least a perceived need for a new site. Although I think it may be significant that most of the higher-voted sample questions have been answered here.
So, what (if anything) to do? I'm aware of the GD-related banner on the proposal site.