[mltony]

Just having raw Tex code for the formula would be already immensely helpful. Right now we're in the situation that the information about formulas is lost for screenreader users. Once there's raw Tex formula, then screenreader developers, myself included, can come up with many different ways to present formulas in more convenient form. But again, so far, the raw tex code of the formulas is lost, and apparently it seems to be either incredibly hard to embed it into PDFs or something - judging by so little progress in this direction over the last decade.