A quick search online showed nouns typically make up about 20 per cent of words used, and verbs 15 per cent of words used (the remaining 65 per cent being other parts of speech, such as adjectives, pronouns, and prepositions).
In this simplified grammar of PowerPoint slides, using this relative proportion of nouns to verbs means that one would expect about 57 per cent of the slides to be noun slides, and 43 per cent verb slides. This is very close to the proportion in the finished slide deck described earlier.
Do you agree more verb slides are a good thing, or does it depend on the deck? What ratio of noun slides to verb slides works for you? What other techniques do you use to make your presentations more engaging and compelling? I'd love to read your thoughts in the comments.