There’s got to be a better way
For me these days it seems that the task of creating a presentation is really an act of merging and culling prior presentations, then creating new material to stitch it all together. Powerpoint is awful at this. What’s really needed is a way to view multiple presentations (trying … hard … not … to … say … “decks”) in a single window with all available slides so that you can mix and match and group. Sort of like the thumbnail view but with the flexibility to arrange stuff non-linearly. I don’t think Keynote does this either. I end up printing it all out and arranging on the floor. The GTD people surely love this low-tech information design, but I’m not convinced software couldn’t solve the problem (and free up my kid’s play area floor space)
Tinderbox for Windows where are you?