The smart keyboard of the iPad Pro also works as a kickstand: https://i.ytimg.com/vi/d5DGhcqlIec/maxresdefault.jpg
I have noticed using the Netflix app that the keyboard controls are a very comfortable way for basic controls.
spacebar = play/pause
arrow left/right = skip ten seconds backward/forward (command + arrow left/right= one second backward/forward)
arrow up/down = volume
command + arrow up/down = brightness
additionally you could make other keyboard shortcuts:
s = subtitles on/off
d = deinterlace on/off
m = set a marker (command + m = go to marker) or even allow multiple markers with numbers
This could be a really nice feature set.
Also, please allow for some basic picture settings like in VLC (saturation, sharpness, contrast).
At the very least I am hoping for saturation as I have some black and white films with color distortions and I want to be able to to remove all color to full black & white.