Make it possible to edit a slide while slides are displaying. This should be an extra window that I can move around to another screen without disrupting the rest of the App functionality. I’ve used a competitor program before where I had this feature. The arrow up/down hot keys for next/previous slide are not helpful in a separate editor window. You should consider adding Numpad + and - as (additional?) global hotkeys. Page Up, Page Down key might also be nice if there is no NumPad on e.g. a Laptop. This way you be in the quick edit window but still control the slides using these extra hotkeys.