The idea of having 48V right next to 1V data lines make me mildly nervous. While 48V may be common in datacenters and telecom, the distribution and data in 48V equipment is usually segregated to different backplane connectors or at least far enough apart that no possible fault on 48V could touch data. No such space on type-C.
Type-C is better to sort out its compatibility issues than keep adding features that are "optional". Charging some devices via "universial" type-C that requies proprietary chargers could kill the charger (cough Dell) or the the device (cough HP).