If a phone only has one USB-type C connector on it, how will you both charge and listen to music with your headphones with it? Is there going to be two connectors, one at the top and one at the bottom?
May be as small as a cable inter-connect 3 type c sockets, 1 for the phone, and one each for whatever you want to connect to. You could daisy chain these or have hubs that offer 1 in and 6 out, etc.
At the same time - sure, Intel should go ahead and implement this. But phones should just have both USB and 3.5" connectors.