One thing which doesn't exist yet, which seems like it should, is "NUMA over Thunderbolt", where you dock your laptop to your desktop, and the laptop OS sees hotplug events for everything in the desktop from CPUs downwards, and executes as a single system image (using the better CPUs, GPUs and memory) for as long as you're docked, and then when you want to make a move again the undocking process sends hot-unplug events for all the desktop's peripherals again.

Peter