Hi,
as we are exploring our options to develop advanced PowerPoint add-in using JS, these missing API features as a showstopper for us.
Missing events:
* Slide - selection changes (so was can track which slide is selected)
* SlideShow - started, slide changed, slide build changed and ended (so we can provide enhanced experience while slide show is running)
Existing APIs:
Calling context.presentation.slides.add() method returns void. We need this API to return the Slide ID so we can correctly identify which slide was added by this call. You existing API has synchronization issues so added and editing multiple slides results in PowerPoint editing wrong slides.