The forum I’m building seeks to curb the unfortunate reality that 663 Facebook groups exist for history and/or genealogy topics for New England states alone. My hope is to unite everyone: scholars, librarians, genealogists, family history researchers and so on, to improve discovery through the ability to search across all categories and sub-categories. (The forum caters to New England history and genealogy.)
Whereas the ability to search the contents of posts will presumably be a huge victory in and of itself, I’ll shoot for the stars and say the “icing on the cake” would be to also search out-of-copyright books, newspapers, journal articles etc converted into .txt files and dropped into some sort of “knowledge base” or document library.
As far as I can tell, this hasn’t been a hot-button topic in the Discourse community. .
Just wanted to say that I would love to see this feature emerge in the future 
. It would allow us to take wiki-linking to a new level, but most important, I think it could further enhance discovery. (Though a digression, I accomplish same from my desktop through database software for the Mac called DEVONthink, which further incorporates mind-blowing artificial intelligence capability for classification and “see also” purposes). Cheers!