USB-C has little standardization...You can potentially damaged your electronics connecting the wrong powerbrick and usb-c cable to your devices due to the wide range of power the cable can supply, 5v at 3a to 48v at 5a.

If they wanted to they could update USB-C to 2.0, 3.0, and on and on. There is no need to develop an entirely new format with a different connector and port design.