Said it before, saying it again: #latex and #beamer kick butt when it comes to creating slideshows. Combined with something like pympress to show the stuff and you're good to go. And #nvim with some snippet engine to make life easier when editing.
@kf I am a vim person too, but for LaTeX wysiwym editing, Lyx is the tool for me. And with beamer it has always worked well - with a bunch of little caveats here and there around edge cases.
