Also, swiping left to get back to the first slide puts me back in the editor (I went too far), and then hitting slideshow puts me back where I started so I have to swipe left again.
The swipe left on first slide is a feature though, its to help mobile users get back to the editor easily.
Maybe display speaker notes by default if the screen is in portrait mode?
I'll have a think on this tonight and I'm sure we can do a tablet speaker notes mode.