Interesting questions, Nicola. I think the option of having the video auto-pause at cue points and requiring the learner to click to continue would be very useful in a number of scenarios. It would ,however, be hard to accomplish this through timecodes as attributes in separate components. By, instead, building said functionality into the videoplayer, we would also avoid the issue of having to disable full screen on mobile.
Having said that... As Adam points out, getting video cuepoints to work on all mobile devices (without having users of certain devices installing a special app), is not a straightforward task at present... My most successful attempts at creating interactive video with cue points that work as intended across browsers and devices, were made using layers, variables and pause/start media triggers in a rapid authoring tool.
I'd be curious to hear more people's thoughts on how video-based interactivity could be handled in Adapt.
Thanks