Content Add Ins (office.js) are great to present Individual content in PowerPoint.
To benefit even more add the possibility to use the Content add ins interactivity in Presenter View which means you have kind a "remote control" for the Content which you are presenting.
The Presenter view already reacts on some media interactions like starting/stopping.
The content add in should also get clicks and keyboard input.
The laser pointer and drawing tools do not work with office add ins - the add in is always top most and all drawing and pointing is below.
