Adding my name to the long list of people upset with the removal of presentation mode. I'm a lecturer and it was the ONLY reason I paid for premium. The lack of response from the devs team about this is also a bit galling. I expected them to FIX the formatting issues of presentation mode, not to ditch the feature entirely. I'm currently migrating all my content into another format, just in case, but I'm REALLY hoping they bring this back before my next account renewal.