>>87324652https://pastebin.com/hLdCkrWDI went ahead and made it anyway just to see how much trouble it would be.
Setup:
1) create a deck with the JSON from the pastebin
2) create a scene in OBS called Powerpoint
3) create a folder with images in it called "Slide 1, Slide 2, etc" This example deck works on an assumed 10 slides but you can adjust it to more or less as you please, you'll just have to edit the Slides button for more or less.
Open the deck in the SAMMI panel or Deckhopper (I prefer the Hopper, personally) and you're set. Buttons are self explanitory. Forward moves to the next sequential slide, Back moves back. Pushing back at the start of your slideshow is silly so don't do that obviously. OBS lets you nest scenes onto other scenes so just drop that Powerpoint scene into another overlay where you need it. It will work just the same. You could do this with any sort of image or even video files.