There are a couple of really crucial improvements I think you should include to really make your promoting apps one of the best.
1/ include a button that allows the scrolling script text to continue from where the script is when you are about to record a new take.
Goi g back to the beginning every time is a nuisance when you need to pickup.
Be able to see the focus and exposure and lock that before starting the app. If you rely on the auto exposure and focus all the time it’s a problem.