I would love to be able to reverse highlight things on the screen.
Use case 1 - We are walking a learner through a screen record on how to use a certain software. The learner needs to click in a specific area and not only is there a button, but the rest of the screen is dimmed(or darkened) to allow the learner to quickly find the prompt.
Use case 2 - A busy graphic is displayed during a narration. The narrator is identifying different parts of the graphic. The screen around the portion of the graphic is dimmed to help guide the learners eyes to the appropriate area.
A quick visual example of this is the logitech spotlight presentation remote.
https://youtu.be/4GBqfDPyd7U
A zoom featurre would be an awesome addition to this feature as well!