Continuum feature on WM smartphone was a brilliant idea, but still got some limitations. You need to access multiple devices to feel like a PC while using continuum.
So, I just thought why not using hololens as a continuum device. In this idea, hololens will be the display, keyboard or mouse , while the smartphone will power the hololens. It means the smartphone will be the heart of the process, and the rest will be done by hololens to display the screen or offering keyboard or mouse for you.
While holoniuum, will make continuum more interesting it will add extra functions, such as privacy solutions. For example you need to log in a specific website or application through your smartphone, the process of entering the password or the stored pattern can be done in hololens, with almost zero chance to be discovered.