I am an e-Accessibility specialist at ETHZ and have been using reveal.js for some time now because I think reveal.js has enormous potential as an accessible presentation software. This technology has the potential to conquer the education sector. PPT and similar applications are much less suited for accessibility than HTML and CSS based approaches.
However, reveal.js does not exploit the potential in any way. It would need a view option of the slides that displays the HTML content in a linearized way, so that screen readers, for example, can access all the headings in one go. Similar to "?print-pdf".
Among other ideas I would like to present and contribute such a functionality ...