Interestingly enough, Micorsoft had been working on Continuum where you could have some of this functionality. Considering most flagship phones are packing as much RAM and processors that are as fast as some laptops, this seemed like a good solution.

The only caveat is the Windows Mobile platform is dead. Too bad really, I thought Continuum had some real promise.

https://www.microsoft.com/en-us/windows/Continuum