Note that the A11 has two "big" cores, and four much slower but power efficient "little" cores. If they were making an A11 variant for desktop use they would have the power profile to use more big cores.
I think we are headed into the world of multi-cpu world. I see the ARM being helped by a CUDA power efficient co-processor with I/O similar to Power9. The issue is our tools as developers wouldn't be able to take advantage of this for a while. 95% of people's applications don't take advantage of multi-threaded processors.
