When presentation slides are too wordy you generally lose most of your audience. Also, instead of listening to what the speaker is saying, when there are a lot of words on a slide the audience reads instead of listening.
What if your favorite presentation tool included an automatic word counter on the bottom of each slide?
How would that help you improve your presentation creation abilities, well, more so the amount of time you spent prepping for your presentation.
You could just start doing this manually without waiting for it as a feature.