I am interested in what you mean by app replication. My dream is make a virtual machine that doesn't care what device is which so you can use all your peripherals and compute regardless of what machine it is on. Live migration of running code. It just needs to be aware of bandwidth, latency, available compute, and memory. 😛 It is really hard to solve, but it is possible. Imagine writing a naive raytracer on your phone and have the VM be smart enough to split out the rendering loop to run on your PC.