Personally what I've dreamed of for half a decade is an interactive first-use tutorial that takes you on a tour of the UI, similar to what RTS video games - which have desktop-like UIs they need to teach quickly in an engaging way that teaches by doing - have. I even started toying around with it once by writing "render a highlight deco around a rect on screen to make it stand out" kwin effect etc but didn't get far.
I think our onboarding experience needs something like that, more so than a config wizard. Cheers, Eike
