Thanks Ihor for reviving this conversation. Just not to scare people: I have been able to use the basic article, report and book classes with #orgmode using #pdflatex and produce #accessible documents (to the extent that tables ad images can be read) using the basic tagging configuration we use for #ltx-talk with lualatex. I'd need feedback on improvements and experiments to confirm and refine the setup for a 'reference setup' we can put in the manual.