@patdavid what tool are you using to generate your slides? I’d started using Pandoc’s markdown for slides, since I find pandoc to be simple and flexible. Pandoc can also output into 6 different slide fomats: S5, DZSlides, Slidy, Slideous, or reveal.js (HTML) or LaTeX Beamer (PDF). I think it’d make sense to contribute slides in the same format.
My idea was to break my final presentation down into sets of slides, so people who’d want to give talks will have something to start from.