To my delight, the text you use in Keynote animates. Depending on which build you use, you can either affect the letter, word, paragraph or the entire selection as an object. (I think that feature is also in PowerPoint.) Next time, I will definitely share a sample QT video of this scene.
I won't have to work on this until July, so it will be a while. I will be trying to propose more alternatives for the animated sequences. I am confident, I can create more elements.