I see a lot of text-editing environments geared towards "distraction-free, focused editing" but not a lot of innovation on an OS focused on the same experience. I would like to see such a "writing OS" that boots to a text editor in less than a second. Maybe this OS is a candidate?
Is that the kind of experience you'd look for in a distraction-free OS? If not I'd be interested to hear your ideas - I use i3 for work but manage to distract myself anyway because I always have a web browser open.